137-577: The United States never had an organized territory named Ohio Territory . This term may refer to: Territory Northwest of the River Ohio , an organized incorporated territory of the United States in the Great Lakes region between 1787 and 1803 Ohio Country , a vaguely defined colonial/frontier region, roughly covering the lands between the upper Ohio River and
274-611: A Jacksonville, Illinois businessman, who invited her to Illinois, where he had been working to build an asylum for the insane. With the lobbying expertise of Dix, plans for the Jacksonville State Hospital (now known as the Jacksonville Developmental Center ) were signed into law on March 1, 1847. During the American Civil War , Illinois ranked fourth in soldiers who served (more than 250,000) in
411-591: A particle accelerator , which was the world's largest for over 40 years. With eleven plants currently operating, Illinois leads all states in the amount of electricity generated from nuclear power. In 1961, Illinois became the first state in the nation to adopt the recommendation of the American Law Institute and pass a comprehensive criminal code revision that repealed the law against sodomy . The code also abrogated common law crimes and established an age of consent of 18. The state's fourth constitution
548-578: A sanctuary state . In the 2018 election , Rauner was replaced by J. B. Pritzker , returning the state government to a Democratic trifecta . In January 2020 the state legalized marijuana . On March 9, 2020, Pritzker issued a disaster proclamation due to the COVID-19 pandemic . He ended the state of emergency in May 2023. During the early part of the Paleozoic Era , the area that would one day become Illinois
685-595: A standardized system for surveying the land into saleable lots, although Ohio was partially surveyed several times using different methods, resulting in a patchwork of land surveys in Ohio. Some older French communities' property claims based on earlier systems of long, narrow lots also were retained. The rest of the Northwest Territory was divided into roughly uniform square townships and sections, which facilitated land sales and development. The ordinance also stipulated that
822-407: A succession crisis , Brigham Young led most Latter Day Saints out of Illinois in a mass exodus to present-day Utah ; after close to six years of rapid development, Nauvoo quickly declined afterward. After it was established in 1833, Chicago gained prominence as a Great Lakes port, and then as an Illinois and Michigan Canal port after 1848, and as a rail hub soon afterward. By 1857, Chicago
959-525: A 50-acre (20 ha) plaza larger than 35 football fields, and a woodhenge of sacred cedar, all in a planned design expressing the culture's cosmology. Monks Mound , the center of the site, is the largest Pre-Columbian structure north of the Valley of Mexico . It is 100 ft (30 m) high, 951 ft (290 m) long, 836 ft (255 m) wide, and covers 13.8 acres (5.6 ha). It contains about 814,000 cu yd (622,000 m ) of earth. It
1096-559: A US army by Native Americans in history. About 623 American soldiers were killed in action, and about 50 Native Americans were killed. Although an investigation exonerated him, St. Clair resigned his army commission in March 1792 at the request of President Washington, but continued to serve as Governor of the Northwest Territory. After St. Clair's defeat, In June 1792, President Washington tapped revolutionary war hero Major General "Mad" Anthony Wayne to avenge St. Clair and assert sovereignty over
1233-585: A boom in 1937, and by 1939, Illinois ranked fourth in U.S. oil production. Illinois manufactured 6.1 percent of total United States military armaments produced during World War II , ranking seventh among the 48 states. Chicago became an ocean port with the opening of the Saint Lawrence Seaway in 1959. The seaway and the Illinois Waterway connected Chicago to both the Mississippi River and
1370-468: A chain of events culminating in Blagojevich's impeachment , trial, and subsequent criminal conviction and imprisonment, making Blagojevich the second consecutive Illinois governor to be convicted on federal corruption charges. Blagojevich's replacement Pat Quinn was defeated by Republican Bruce Rauner in the 2014 election . Disagreements between the governor and legislature over budgetary policy led to
1507-556: A climate that varies widely throughout the year. Because of its nearly 400-mile distance between its northernmost and southernmost extremes, as well as its mid-continental situation, most of Illinois has a humid continental climate ( Köppen climate classification Dfa ), with hot, humid summers and cold winters. The southern part of the state, from about Carbondale southward, has a humid subtropical climate (Koppen Cfa ), with more moderate winters. Average yearly precipitation for Illinois varies from just over 48 in (1,219 mm) at
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#17328446705531644-780: A fort at the site of present-day Peoria , and in 1682, a fort atop Starved Rock in today's Starved Rock State Park. French Empire Canadiens came south to settle particularly along the Mississippi River, and Illinois was part of first New France , and then of La Louisiane until 1763, when it passed to the British with their defeat of France in the Seven Years' War . The small French settlements continued, although many French migrated west to Ste. Genevieve and St. Louis, Missouri , to evade British rule. A few British soldiers were posted in Illinois, but few British or American settlers moved there, as
1781-567: A large Native American state that would cover most of the Old Northwest. It would be independent of the United States and allied with the British, who would use it to block American westward expansion and to build up their control of the North American fur trade headquartered in Montreal. A new colony, named Charlotina , was proposed for establishment in the southern Great Lakes region before
1918-670: A law to prohibit all African Americans, including freedmen , from settling in the state. The winter of 1830–1831 is called the "Winter of the Deep Snow"; a sudden, deep snowfall blanketed the state, making travel impossible for the rest of the winter, and many travelers perished. Several severe winters followed, including the "Winter of the Sudden Freeze". On December 20, 1836, a fast-moving cold front passed through, freezing puddles in minutes and killing many travelers who could not reach shelter. The adverse weather resulted in crop failures in
2055-462: A major general. He led a punitive expedition involving two Regular Army regiments and some militia. In October 1791 as an advance post for his campaign, Fort Jefferson (Ohio) , was built under his direction. Located in present-day Darke County in far western Ohio, the fort was built of wood and intended primarily as a supply depot; accordingly, it was originally named Fort Deposit. One month later, near modern-day Fort Recovery , his force advanced to
2192-705: A north–south line at 87° 31′ 30″ west longitude in Lake Michigan at the north, to the Wabash River in the south above Post Vincennes . The Wabash River continues as the eastern/southeastern border with Indiana until the Wabash enters the Ohio River . This marks the beginning of Illinois's southern border with Kentucky , which runs along the northern shoreline of the Ohio River. Most of the western border with Missouri and Iowa
2329-577: A part of Indiana Territory starting in 1800) began in 1801, through the Cincinnati land office. After the Revolutionary War ended, Rufus Putnam (the "Father of Ohio") and Manasseh Cutler were instrumental in creating the Northwest Ordinance , which opened up the Northwest Territory for settlement. This land was used to serve as compensation for what was owed to Revolutionary War veterans. It
2466-542: A population, excluding Native Americans, of over 45,000, and Indiana Territory, a population of about 5,600. By the time of Ohio statehood, there were as many as 50 named towns in Northwest and Indiana Territories, a few, like Vincennes, with thousands of settlers, and dozens of unnamed settlements below the Treaty Line in Ohio. Following settlement of the frontier, the great wave of colonial immigration flowed westward, founding
2603-575: A state in 1818, the Ordinance no longer applied, and about 900 slaves were held in the state. As the southern part of the state, later known as "Egypt" or "Little Egypt", was largely settled by migrants from the South, the section was hostile to free blacks. Edward Coles , the second Governor of Illinois who was born in Virginia, participated in a campaign to block extending existing slavery in Illinois after winning
2740-684: A string of high-profile exonerations, Ryan commuted all death sentences in the state. The 2002 election brought Democrat Rod Blagojevich to the governor's mansion. It also brought future president Barack Obama into a committee leadership position in the Illinois Senate, where he drafted the Health Care Justice Act , a forerunner of the Affordable Care Act . Obama's election to the presidency in Blagojevich's second term set off
2877-582: A weather station not subjected to the same quality control as official records. Illinois averages approximately 51 days of thunderstorm activity a year, which ranks somewhat above average in the number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes, with an average of 35 occurring annually, which puts much of the state at around five tornadoes per 10,000 sq mi (30,000 km ) annually. While tornadoes are no more powerful in Illinois than other states, some of Tornado Alley 's deadliest tornadoes on record have occurred in
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#17328446705533014-408: A wedge-shaped area of present-day Indiana in the southeast known as "the gore". It, along with everything east of the new territory, remained part of the Northwest Territory. This legislation was signed into law by President John Adams on May 7, 1800, and became effective on July 4. On April 30, 1802, Congress passed an enabling act for Ohio that authorized the residents of the eastern portion of
3151-530: A wide variety of ethnic groups. The city of Rockford , Illinois's third-largest city and center of the state's fourth largest metropolitan area, sits along Interstates 39 and 90 some 75 mi (121 km) northwest of Chicago. The Quad Cities region, located along the Mississippi River in northern Illinois, had a population of 381,342 in 2011. The midsection of Illinois is the second major division, called Central Illinois . Historically prairie , it
3288-561: Is ireniwaki . The name Illiniwek has also been said to mean 'tribe of superior men', which is a false etymology . The name Illinois derives from the Miami-Illinois verb irenwe·wa 'he speaks the regular way'. This was taken into the Ojibwe language , perhaps in the Ottawa dialect , and modified into ilinwe· (pluralized as ilinwe·k ). The French borrowed these forms, spelling
3425-482: Is defined as 10 miles north of the southernmost extremity of Lake Michigan. However, the Illinois delegate, Nathaniel Pope , wanted more, and lobbied to have the boundary moved further north. The final bill passed by Congress included an amendment to shift the border to 42° 30' north, which is approximately 51 mi (82 km) north of the Indiana northern border. This shift added 8,500 sq mi (22,000 km ) to
3562-764: Is different from Wikidata All set index articles Territory Northwest of the River Ohio The Northwest Territory , also known as the Old Northwest and formally known as the Territory Northwest of the River Ohio , was formed from unorganized western territory of the United States after the American Revolution . Established in 1787 by the Congress of the Confederation through
3699-689: Is now mainly agricultural and known as the Heart of Illinois. It is characterized by small towns and medium–small cities. The western section (west of the Illinois River) was originally part of the Military Tract of 1812 and forms the conspicuous western bulge of the state. Agriculture, particularly corn and soybeans , as well as educational institutions and manufacturing centers, figure prominently in Central Illinois. Cities include Peoria ; Springfield ,
3836-557: Is separated from the rest of the state by the Mississippi River. This region has a somewhat warmer winter climate, different variety of crops (including some cotton farming in the past), more rugged topography (due to the area remaining unglaciated during the Illinoian Stage , unlike most of the rest of the state), as well as small-scale oil deposits and coal mining. The Illinois suburbs of St. Louis , such as East St. Louis , are located in this region, and collectively, they are known as
3973-472: Is the Mississippi River ; Kaskaskia is an exclave of Illinois, lying west of the Mississippi and reachable only from Missouri. The state's northern border with Wisconsin is fixed at 42° 30′ north latitude. The northeastern border of Illinois lies in Lake Michigan , within which Illinois shares a water boundary with the state of Michigan , as well as Wisconsin and Indiana. Though Illinois lies entirely in
4110-520: The /we/ ending as -ois , a transliteration of that sound in the French of that time. The current spelling form, Illinois , began to appear in the early 1670s, when French colonists had settled in the western area. The Illinois's name for themselves, as attested in all three of the French missionary-period dictionaries of Illinois, was Inoka , of unknown meaning and unrelated to the other terms. American Indians of successive cultures lived along
4247-424: The 1822 Illinois gubernatorial election . In 1824, state residents voted against making slavery legal by a vote of 6640 against to 4972 for. Still, most residents opposed allowing free blacks as permanent residents. Some settlers brought in slaves seasonally or as house servants. The Illinois Constitution of 1848 was written with a provision for exclusionary laws to be passed. In 1853, John A. Logan helped pass
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4384-677: The American Revolutionary War , provisions in the Articles of Confederation , and various treaties preceding the Northwest Indian War including Treaty of Fort Stanwix (1784) and Treaty of Fort McIntosh (1785). The treaty process extended well beyond the War and existence of the Territory as a political entity. European exploration of the region began with French-Canadian voyageurs in
4521-651: The American Revolutionary War . Congress passed the Proclamation of 1783 , which recognized Native American rights to the land. A council held in 1785 at Fort Detroit declared that the confederacy would deal jointly with the United States, forbade individual tribes from dealing directly with the United States, and declared the Ohio River as the boundary between their lands and those of the American settlers. The Northwest Territory's first governor, Arthur St. Clair , sought to end Native American claims to Ohio land and thus clear
4658-441: The Articles of Confederation so long as these states were allowed to keep their western territory, fearing that those states could continue to grow and tip the balance of power in their favor under the proposed system of federal government. As a concession to obtain ratification, these states ceded their claims on the territory to the federal government: New York in 1780, Virginia in 1784, and Massachusetts and Connecticut in 1785. So
4795-589: The Atlantic Ocean . In 1960, Ray Kroc opened the first McDonald's franchise in Des Plaines , which was demolished in 1984. In 1985 a replica was built on the same site to recreate how the original one looked. Though this replica was demolished in 2017, due to repeated flooding of the building. Illinois had a prominent role in the emergence of the nuclear age . In 1942, as part of the Manhattan Project ,
4932-773: The Eocene Epoch . During the Pleistocene Epoch , vast ice sheets covered much of Illinois, with only the Driftless Area remaining exposed. These glaciers carved the basin of Lake Michigan and left behind traces of ancient glacial lakes and moraines . Illinois is located in the Midwest region of the United States and is one of the eight states in the Great Lakes region of North America (which also includes Ontario , Canada). Illinois's eastern border with Indiana consists of
5069-531: The Illinois Native Americans , a name that was spelled in many different ways in the early records. American scholars previously thought the name Illinois meant 'man' or 'men' in the Miami-Illinois language , with the original iliniwek transformed via French into Illinois. This etymology is not supported by the Illinois language, as the word for "man" is ireniwa , and plural of "man"
5206-480: The Illinois Budget Impasse , a 793-day period stretching from 2015 to 2018 in which the state had no budget and struggled to pay its bills. On August 28, 2017, Rauner signed a bill into law that prohibited state and local police from arresting anyone solely due to their immigration status or due to federal detainers. Some fellow Republicans criticized Rauner for his action, claiming the bill made Illinois
5343-680: The Illinois Country (prior to 1787) loosely, the Ohio River Valley in colonial times incorrectly or informally, lands within the boundary of the state of Ohio after statehood in 1803 The portion of Canada, New France south of the Great Lakes, east of the Mississippi and Lake Michigan, which was conquered by Britain in the French and Indian Wars See also [ edit ] Ohio Valley (disambiguation) Ohio (disambiguation) [REDACTED] Index of articles associated with
5480-661: The Interior Plains , it does have some minor variation in its elevation. In extreme northwestern Illinois, the Driftless Area , a region of unglaciated and therefore higher and more rugged topography, occupies a small part of the state. Southern Illinois includes the hilly areas around the Shawnee National Forest . Charles Mound , located in the Driftless region, has the state's highest natural elevation above sea level at 1,235 ft (376 m). Other highlands include
5617-648: The Latter Day Saints had founded a utopian city called Nauvoo , formerly called Commerce. Located in Hancock County along the Mississippi River , Nauvoo flourished and, by 1844, briefly surpassed Chicago for the position of the state's largest city. But in that same year, the Latter Day Saint movement founder, Joseph Smith , was killed in the Carthage Jail , about 30 miles away from Nauvoo. Following
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5754-678: The Metro-East . The other somewhat significant concentration of population in Southern Illinois is the Carbondale-Marion-Herrin, Illinois Combined Statistical Area centered on Carbondale and Marion , a two-county area that is home to 123,272 residents. A portion of southeastern Illinois is part of the extended Evansville, Indiana , Metro Area, locally referred to as the Tri-State with Indiana and Kentucky. Seven Illinois counties are in
5891-531: The Midwest region . Chicago, the third-most populous city in the United States , is the center of the Chicago metropolitan area or Chicagoland, as this area is nicknamed. Although the Chicago metropolitan area comprises only 9% of the land area of the state, it contains 65% of the state's residents, with 21.4% of Illinois' population living in the city of Chicago itself as of 2020. The losses of population anticipated from
6028-530: The Northwest Ordinance , it was the nation's first post-colonial organized incorporated territory . At the time of its creation, the territory included all the land west of Pennsylvania , northwest of the Ohio River and east of the Mississippi River below the Great Lakes , and what later became known as the Boundary Waters . The region was ceded to the United States in the Treaty of Paris of 1783 . Throughout
6165-411: The Northwest Ordinance . A bicameral legislature consisted of a House of Representatives and a Council. The first House had 22 representatives , apportioned by population of each county. The House then nominated 10 citizens to be Council members. The nominations were sent to the U.S. Congress, which appointed five of them as the council. This assembly became the legislature of the Territory, although
6302-574: The Revolutionary War , the region was part of the British Province of Quebec and the western theater of the war. It spanned all or large parts of six eventual U.S. states ( Ohio , Indiana , Illinois , Michigan , Wisconsin , and the northeastern part of Minnesota ). Reduced to present-day Ohio, eastern Michigan and a sliver of southeastern Indiana with the formation of Indiana Territory July 4, 1800, it ceased to exist March 1, 1803, when
6439-625: The Shawnee Hills in the south, and there is varying topography along its rivers; the Illinois River bisects the state northeast to southwest. The floodplain on the Mississippi River from Alton to the Kaskaskia River is known as the American Bottom . Illinois has three major geographical divisions. Northern Illinois is dominated by Chicago metropolitan area , or Chicagoland, which is
6576-418: The Union Army , a figure surpassed by only New York, Pennsylvania , and Ohio . Beginning with President Abraham Lincoln 's first call for troops and continuing throughout the war, Illinois mustered 150 infantry regiments, which were numbered from the 7th to the 156th regiments. Seventeen cavalry regiments were also gathered, as well as two light artillery regiments. The town of Cairo , at the southern tip of
6713-423: The University of Chicago conducted the first sustained nuclear chain reaction . In 1957, Argonne National Laboratory , near Chicago , activated the first experimental nuclear power generating system in the United States. By 1960, the first privately financed nuclear plant in the United States, Dresden 1 , was dedicated near Morris . In 1967, Fermilab , a national nuclear research facility near Batavia , opened
6850-418: The 17th century, followed by French missionaries and French fur traders. French-Canadian explorer Jean Nicolet was the first recorded European entrant into the region, landing in 1634 at the current site of Green Bay, Wisconsin (although Étienne Brûlé is stated by some sources as having explored Lake Superior and possibly inland Wisconsin in 1622). The French exercised control from widely separate posts in
6987-484: The Crown made it part of the territory reserved for Indians west of the Appalachians, and then part of the British Province of Quebec . In 1778, George Rogers Clark claimed Illinois County for Virginia . In a compromise, Virginia (and other states that made various claims) ceded the area to the new United States in the 1780s and it became part of the Northwest Territory , administered by the federal government and later organized as states. The Illinois-Wabash Company
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#17328446705537124-488: The Fox ( Meskwaki ), Iowa , Kickapoo , Mascouten , Piankeshaw , Shawnee , Wea , and Winnebago ( Ho-Chunk ) came into the area from the east and north around the Great Lakes. French explorers Jacques Marquette and Louis Jolliet explored the Illinois River in 1673. Marquette soon after founded a mission at the Grand Village of the Illinois in Illinois Country . In 1680, French explorers under René-Robert Cavelier, Sieur de La Salle and Henri de Tonti constructed
7261-480: The Miami capital of Kekionga. Along the way Wayne's legion built a series of outpost forts including Fort Greene Ville, Fort Recovery and Fort Defiance. Fierce battles occurred around some of these but none of Wayne's forts were ever taken by the Native Americans. In mid 1794, the British constructed Fort Miamis near what is today Toledo, Ohio, to forestall Wayne's putative advance on the British stronghold at Detroit. The final battle of Wayne's campaign occurred within
7398-463: The Mississippi River were the Louisiana Province of New Spain, formerly New France, acquired by the United States in 1803 by the Louisiana Purchase . Lands north of the Great Lakes were part of the British Province of Upper Canada . Lands south of the Ohio River constituted Kentucky County, Virginia , admitted to the union as the state of Kentucky in 1792. The area included more than 300,000 square miles (780,000 km ) and comprised about 1/3 of
7535-472: The Montreal-based fur trade. The prohibition of settlement west of the Appalachians remained, contributing to the American Revolution . In February 1779, George Rogers Clark , leading a force of Virginia militia , captured Kaskaskia and Vincennes from British commander Henry Hamilton . Virginia capitalized on Clark's success by laying claim to the whole of the Old Northwest, calling it Illinois County , Virginia, until 1784, when it ceded its land claims to
7672-448: The Muskingum ). Settlement of these areas was spearheaded by Losantiville and Marietta, respectively. In 1792, Congress donated 100,000 acres to Ohio Company as a buffer zone against Native American incursion around the settled area. The vexing land claims by inhabitants of the old French Vincennes Tract were resolved by what was dubbed the 'Vincennes donation lands' embodied in a federal land act of 1791. Federal land sales in Indiana (then
7809-405: The Native Americans in October 1790. A group of squatters had moved up to the area near present-day Stockport now in Morgan County, Ohio and settled along flood plain , or "bottom" land, of the Muskingum River , some 30 miles north of an Ohio Company of Associates settlement at Marietta, Ohio . The Big Bottom massacre occurred on January 2, 1791. Lenape and Wyandot warriors stormed
7946-494: The Northwest Territory through the Land Ordinance of 1785 . The square surveys of the Northwest Territory became a hallmark of the Midwest , as sections , townships, counties (and states) were laid out scientifically, and land was sold quickly and efficiently (although not without some speculative aberrations). Arthur St. Clair was the territory's governor until November 1802, when President Thomas Jefferson removed him from office and appointed Charles Willing Byrd , who served
8083-442: The Northwest Territory to form a state constitution and government, and be admitted to the Union. When Ohio was admitted as the 17th state on March 1, 1803, the land not included in the new state, including the gore, became part of Indiana Territory, and the Northwest Territory went out of existence. Ongoing disputes with the British over the region were a contributing factor to the War of 1812 . Britain irrevocably ceded claim to
8220-436: The Ohio and Miami Rivers and the south shore of Lake Erie in Ohio. Conflicts between settlers and Native American inhabitants of the Territory resulted in the Northwest Indian War culminating in General "Mad" Anthony Wayne 's victory at Battle of Fallen Timbers in 1794. The subsequent Treaty of Greenville in 1795 opened the way for settlement particularly in southern and western Ohio. The Northwest Territory included all
8357-427: The Ohio, Indiana (1783), and Fort Harmar in Ohio (1785). The first settlements were at these locations. The first land grant was to George Rogers Clark in 1781 at Falls of the Ohio on the Indiana side; he went on to found the settlement of Clarksville. The first two land purchases were large tracts of land sold to John Symmes ( Symmes Purchase ) in 1788 and two tracts sold to Ohio Company in 1787 and 1792 ( Purchase on
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#17328446705538494-404: The Revolution ended, land-hungry migrants started moving west. A gateway trading post developed as the town of Brownsville, Pennsylvania , which was a key outfitting center west of the mountains. Other wagon roads, such as the Kittanning Path surmounting the gaps of the Allegheny in central Pennsylvania, or trails along the Mohawk River in New York, enabled a steady stream of settlers to reach
8631-413: The Revolutionary War and lacking authority to tax under the Articles of Confederation , planned to raise revenue from the methodical sale of land in the Northwest Territory. This plan necessarily called for the removal of both Native American villages and squatters from lands west of Appalachia, loosely, the territory called "Ohio Country" and beyond. Resistance from indigenous tribes, who were supported by
8768-461: The Virginia Military District and Connecticut Western Reserve. The first area to be surveyed was the Seven Ranges along the eastern border of Ohio in 1786–1789. Direct sales of federal lands to individual homesteaders started here. In some cases, the government granted or donated land for special purposes. Settlement followed the forts, whether garrisoned or not. Lack of a garrison meant that threat of Native American attack had become negligible. This
8905-491: The area. In addition to these three, largely latitudinally defined divisions, all of the region outside the Chicago metropolitan area is often called " downstate " Illinois. This term is flexible, but is generally meant to mean everything outside the influence of the Chicago area. Thus, some cities in Northern Illinois, such as DeKalb , which is west of Chicago, and Rockford —which is actually north of Chicago—are sometimes incorrectly considered to be 'downstate'. Illinois has
9042-449: The center of the state, and the state's largest city is Chicago in the northeast. Present-day Illinois was inhabited by Indigenous cultures for thousands of years. The French were the first Europeans to arrive, settling near the Mississippi and Illinois River in the 17th century Illinois Country , as part of their sprawling colony of New France . A century later, the revolutionary Illinois campaign prefigured American involvement in
9179-474: The central Illinois River valley, one third of all adults died as a result of violent injuries." The next major power in the region was the Illinois Confederation or Illini, a political alliance. Around the time of European contact in 1673, the Illinois confederation had an estimated population of over 10,000 people. As the Illini declined during the Beaver Wars era, members of the Algonquian -speaking Potawatomi , Miami , Sauk , and other tribes including
9316-444: The central and southern areas attracted immigrants from Eastern and Southern Europe . Illinois became one of America's most industrialized states and remains a major manufacturing center. The Great Migration from the South established a large Black community, particularly in Chicago , which became a leading cultural, economic, and population center; its metropolitan area , informally referred to as Chicagoland , holds about 65% of
9453-409: The city of Chicago and its suburbs, and the adjoining exurban area into which the metropolis is expanding. As defined by the federal government, the Chicago metro area includes several counties in Illinois, Indiana , and Wisconsin , and has a population of over 9.8 million. Chicago itself is a cosmopolitan city, densely populated, industrialized, the transportation hub of the nation, and settled by
9590-417: The continued British presence in the Northwest Territory, presented a continuing obstacle for American expansion. The area making up the Ohio Country had been contested for over a century, beginning with the 17th-century Beaver Wars . The Western Confederacy , or Western Indian Confederacy , was a loose confederacy of Native Americans in the Great Lakes region of the United States created following
9727-414: The convention to form a constitution for the State of Ohio. In the 1800 United States census , following the passage of an organic act by the 6th U.S. Congress creating the Indiana Territory in 1800, seven counties in the Northwest Territory reported the following population counts: According to the 1800 Census of the United States, the Northwest Territory (i.e. the pending state of Ohio) had
9864-506: The development of the American labor movement . From Sunday, October 8, 1871, until Tuesday, October 10, 1871, the Great Chicago Fire burned in downtown Chicago, destroying four sq mi (10 km ). At the turn of the 20th century, Illinois had a population of nearly 5 million. Many people from other parts of the country were attracted to the state by employment caused by the expanding industrial base. Whites were 98% of
10001-548: The end of Indian resistance to white settlement in the Chicago region. The Indians had been forced to leave their homes and move to Iowa in 1831; when they attempted to return, they were attacked and eventually defeated by U.S. militia . The survivors were forced back to Iowa. By 1832, when the last Indian lands in Illinois were ceded to the United States, the indigenous population of the state had been reduced by infectious diseases, warfare, and forced westward removal to only one village with fewer than 300 inhabitants. By 1839,
10138-671: The events of Pontiac's War , after which the Crown issued the Proclamation of 1763 , which prohibited white colonial settlement west of the Appalachian Mountains . This action angered American colonists interested in expansion, as well as those who had already settled in the area. In 1774, via the Quebec Act , Britain annexed the region to the Province of Quebec in order to provide a civil government and to centralize British administration of
10275-517: The federal government. Britain officially ceded the area north of the Ohio River and west of the Appalachians to the United States at the end of the American Revolutionary War with the Treaty of Paris (1783) , but the British continued to maintain a presence in the region as late as 1815, the end of the War of 1812 . Several states (Virginia, Massachusetts, New York, and Connecticut) had competing claims on
10412-534: The focus of the Northwest Indian War, the driving events in the early evolution of the territory. Integration of the Northwest Territory into a political unit, and settlement, depended on three factors: relinquishment by the British, extinguishment of states' claims west of the Appalachians, and usurpation or purchase of lands from the Native Americans. These objectives were accomplished correspondingly by
10549-524: The following decades. It encompassed what became Ohio, Indiana, Illinois, Michigan, Wisconsin and part of Minnesota. Putnam, in the Puritan tradition, was influential in establishing education in the Northwest Territory. Substantial amounts of land were set aside for schools. Putnam had been one of the primary benefactors in the founding of Leicester Academy in Massachusetts, and similarly, in 1798, he created
10686-523: The former Northwest Territory with the Treaty of Ghent in 1814. The Northwest Ordinance of 1787 established the Northwest Territory, and defined its boundaries, form of government, and administrative structure. In particular, it defined the bodies of government, established the legal basis of land ownership, provided for abolition and transfer of state territorial claims, made rules for admission of new states, established public education, recognized and codified 'natural rights', prohibited slavery, and defined
10823-537: The government on July 15, 1788, at Marietta . In 1790, he renamed the settlement of Losantiville Cincinnati , after the Society of the Cincinnati , and moved the administrative and military center to Fort Washington . As Governor, he formulated the Maxwell's Code (named after its printer, William Maxwell ), the first written criminal and civil laws of the territory. Maxwell's Code consisted of thirty-seven different laws with
10960-533: The governor retained veto power. Article VI of the Articles of Compact within the Northwest Ordinance prohibited the owning of slaves within the Northwest Territory. Territorial governments evaded this law by use of indenture laws. The Articles of Compact prohibited legal discrimination on the basis of religion within the territory. The township formula created by Thomas Jefferson was first implemented in
11097-664: The great cities of the eventual 6 states of the Territory which is now the midwestern United States early in the 19th century: Detroit (<1800), Cleveland (1796), Columbus (1812), Indianapolis (1822), Chicago (1833), Milwaukee (1846), Minneapolis (1847). A Federalist , St. Clair hoped to see two states made of the old Ohio Country to increase Federalist power in Congress . He was resented by Ohio Democratic-Republicans for his apparent partisanship, high-handedness and arrogance in office. In 1802, his opposition to plans for Ohio statehood led President Thomas Jefferson to remove him from office as territorial governor. He thus played no part in
11234-516: The incomplete blockhouse and killed eleven men, one woman, and two children. (Accounts vary as to the number of casualties.) Rufus Putnam wrote to President Washington that "we shall be so reduced and discouraged as to give up the settlement [Marietta following the Big Bottom disaster]." In March 1791, St. Clair succeeded Harmar as commander of the United States Army and was commissioned as
11371-564: The land area of the United States at the time of its creation. It was inhabited by about 45,000 Native Americans and 4,000 non-native traders, mostly of French Canadian , British or Irish descent . Among the tribes inhabiting the region were the Shawnee, Delaware, Miami, Wyandot, Ottawa and Potawatomi. Notably, the Miami capital along with British trading posts was at Kekionga at the site of present-day Fort Wayne, Indiana. Neutralizing Kekionga became
11508-409: The land rights and applicability of laws to the Native Americans. At first, the territory had a modified form of martial law . The governor was also the senior army officer within the territory, and he combined legislative and executive authority . But a supreme court was established, and he shared legislative powers with the court . County governments were organized as soon as the population
11645-399: The location of Native American settlements near the headwaters of the Wabash River . On November 4 they were routed in battle by a tribal confederation led by Miami Chief Little Turtle and Shawnee chief Blue Jacket . More than 600 soldiers and scores of women and children were killed in the battle, known as " St. Clair's Defeat " and many other names. It remains the greatest defeat of
11782-620: The majority of the territory became public land owned by the U.S. government. Virginia and Connecticut reserved two areas to use as compensation to military veterans: the Virginia Military District and the Connecticut Western Reserve Thomas Jefferson's Land Ordinance of 1784 was the first organization of the territory by the United States; it provided a process for dividing the territory into individual states. The Land Ordinance of 1785 established
11919-464: The nation's railroad hub since the 1860s, and its O'Hare International Airport has been among the world's busiest airports for decades. Illinois has long been considered a microcosm of the United States and a bellwether in American culture, exemplified by the phrase Will it play in Peoria? . "Illinois" is the modern spelling for the early French Catholic missionaries and explorers' name for
12056-600: The near west and the lands bordering the Mississippi. This activity stimulated the development of the eastern parts of the eventual National Road by private investors. The Cumberland–Brownsville toll road linked the water routes of the Potomac River with the Monongahela River of the Ohio/Mississippi riverine systems in the days when water travel was the only good alternative to walking and riding. Most of
12193-499: The north and center, and natural resources such as coal, timber, and petroleum in the south. Owing to its central location and favorable geography, the state is a major transportation hub : the Port of Chicago has access to the Atlantic Ocean through the Great Lakes and Saint Lawrence Seaway and to the Gulf of Mexico from the Mississippi River via the Illinois Waterway . Chicago has been
12330-611: The northern part of the state. The southern part of the state shipped food north, and this may have contributed to its name, " Little Egypt ", after the Biblical story of Joseph in Egypt supplying grain to his brothers. In 1832, the Black Hawk War was fought in Illinois and present-day Wisconsin between the United States and the Sauk , Fox (Meskwaki) , and Kickapoo Indian tribes. It represents
12467-452: The organizing of the state of Ohio in 1803. The first Ohio Constitution provided for a weak governor and a strong legislature , in part a reaction to St. Clair's method of governance. In preparation for Ohio's statehood, Congress split the Northwest Territory into two sections in 1800. A new territory, Indiana Territory , encompassed all land west of the present Indiana–Ohio border and its northward extension to Lake Superior , except for
12604-540: The plan for the construction of the Muskingum Academy (now Marietta College ) in Ohio. In 1780, the directors of the Ohio Company appointed him superintendent of all its affairs relating to settlement north of the Ohio River. In 1796, he was commissioned by President George Washington as Surveyor-General of United States Lands. In 1788, he served as a judge in the Northwest Territory's first court. In 1802, he served in
12741-399: The population of Illinois was 12,812,508 in the 2020 United States census , moving from the fifth-largest state to the sixth-largest state (losing out to Pennsylvania). Illinois' population slightly declined in 2020 from the 2010 United States census by just over 18,000 residents and the overall population was quite higher than recent census estimates. Illinois is the most populous state in
12878-412: The position until Ohio became a state and elected its first governor, Edward Tiffin , on March 3, 1803. The Supreme Court consisted of (1) John Cleves Symmes ; (2) James Mitchell Varnum , who died in 1789, replaced by George Turner , who resigned in 1796, and was replaced by Return Jonathan Meigs Jr. ; and (3) Samuel Holden Parsons , who died in 1789, replaced by Rufus Putnam , who resigned 1796, and
13015-496: The region, where British subjects outnumbered Americans throughout the 1790s. The following year, the Treaty of Greenville secured peace on the western frontier and opened most of southern and eastern Ohio for American settlement. Sporadic westward emigrant settlements had already resumed late in the war after the Iroquois Confederacy 's power was broken and the tribes scattered by the 1779 Sullivan Expedition . Soon after
13152-531: The region, which they claimed as New France ; among these was the post at Fort Detroit , founded in 1701. France ceded the territory to the Kingdom of Great Britain as part of the Indian Reserve in the 1763 Treaty of Paris , after being defeated in the French and Indian War . From the 1750s to the peace treaty that ended the War of 1812, the British had a long-standing goal of creating an Indian barrier state ,
13289-524: The region. Following U.S. independence in 1783 , which made the Mississippi River the national boundary, American settlers began arriving from Kentucky via the Ohio River. Illinois was soon part of the United States' oldest territory, the Northwest Territory , and in 1818 it achieved statehood . The Erie Canal brought increased commercial activity in the Great Lakes, and the invention of the self-scouring steel plow by Illinoisan John Deere turned
13426-572: The same name This set index article includes a list of related items that share the same name (or similar names). If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Ohio_Territory&oldid=1215113005 " Category : Set index articles Hidden categories: All articles with unsourced statements Articles with unsourced statements from August 2021 Articles with short description Short description
13563-612: The scope of this fort. The military campaign of Gen. Wayne against the Western Confederacy, who were supported by a company of troops from Lower Canada, culminated with victory at the Battle of Fallen Timbers in 1794. Following the battle, in fall 1794, Wayne's army marched unopposed to Kekionga where they constructed Fort Wayne, a defiant symbol of U.S. sovereignty in the heart of Native American Country. Jay's Treaty , in 1794, temporarily helped to smooth relations with British traders in
13700-638: The second-most populous urban area in Illinois with over 700,000 residents. Other major urban areas include the Peoria metropolitan area , Rockford metropolitan area , Champaign–Urbana metropolitan area (home to the University of Illinois ), Springfield metropolitan area , the Illinois portion of the Quad Cities area, and the Bloomington–Normal metropolitan area . The United States Census Bureau found that
13837-452: The southeastern portion of the territory was admitted to the Union as the state of Ohio, and the remainder attached to Indiana Territory. Initially, the territory was governed by martial law under a governor and three judges. As population increased, a legislature was formed as were a succession of counties, eventually totaling thirteen. At the time of its creation, the land within the territory
13974-423: The southern tip of Lake Michigan. Such a boundary would have left Illinois with no shoreline on Lake Michigan at all. However, as Indiana had successfully been granted a 10 mi (16 km) northern extension of its boundary to provide it with a usable lakefront, the original bill for Illinois statehood, submitted to Congress on January 23, 1818, stipulated a northern border at the same latitude as Indiana's, which
14111-402: The southern tip to around 35 in (889 mm) in the northern portion of the state. Normal annual snowfall exceeds 38 in (965 mm) in the Chicago area, while the southern portion of the state normally receives less than 14 in (356 mm). The all-time high temperature was 117 °F (47 °C), recorded on July 14, 1954, at East St. Louis , and the all-time low temperature
14248-532: The state at the confluence of the Mississippi and Ohio Rivers, served as a strategically important supply base and training center for the Union army. For several months, both General Grant and Admiral Foote had headquarters in Cairo. During the Civil War, and more so afterwards, Chicago's population skyrocketed, which increased its prominence. The Pullman Strike and Haymarket Riot , in particular, greatly influenced
14385-407: The state capital; Quincy ; Decatur ; Bloomington-Normal ; and Champaign - Urbana . The third division is Southern Illinois , comprising the area south of U.S. Route 50 , including Little Egypt , near the juncture of the Mississippi River and Ohio River . Southern Illinois is the site of the ancient city of Cahokia , as well as the site of the first state capital at Kaskaskia , which today
14522-405: The state of Wisconsin to its north, Iowa to its northwest, Missouri to its southwest, Kentucky to its south, Indiana to its east, and has a water border with Michigan to the northeast in Lake Michigan . Of the fifty U.S. states, Illinois has the fifth-largest gross domestic product (GDP) , the sixth-largest population , and the 25th-most land area . Its capital city is Springfield in
14659-578: The state's 12.8 million residents. Two World Heritage Sites are in Illinois, the ancient Cahokia Mounds , and part of the Wright architecture site. Major centers of learning include the University of Chicago , University of Illinois , and Northwestern University . A wide variety of protected areas seek to conserve Illinois' natural and cultural resources. Three U.S. presidents have been elected while residents of Illinois: Abraham Lincoln , Ulysses S. Grant , and Barack Obama ; additionally, Ronald Reagan
14796-568: The state's population. Bolstered by continued immigration from southern and eastern Europe , and by the African-American Great Migration from the South, Illinois grew and emerged as one of the most important states in the union. By the end of the century, the population had reached 12.4 million. The Century of Progress World's fair was held at Chicago in 1933. Oil strikes in Marion County and Crawford County led to
14933-475: The state's rich prairie into some of the world's most productive and valuable farmland, attracting immigrant farmers from Germany and Sweden . In the mid-19th century, the Illinois and Michigan Canal and a sprawling railroad network facilitated trade, commerce, and settlement, making the state a transportation hub for the nation. By 1900, the growth of industrial jobs in the northern cities and coal mining in
15070-475: The state, including the lead mining region near Galena . More importantly, it added nearly 50 miles of Lake Michigan shoreline and the Chicago River. Pope and others envisioned a canal that would connect the Chicago and Illinois rivers and thus connect the Great Lakes to the Mississippi. In 1818, Illinois became the 21st U.S. state. The capital remained at Kaskaskia, headquartered in a small building rented by
15207-422: The state. In 1819, Vandalia became the capital, and over the next 18 years, three separate buildings were built to serve successively as the capitol building. In 1837, the state legislators representing Sangamon County , under the leadership of state representative Abraham Lincoln , succeeded in having the capital moved to Springfield , where a fifth capitol building was constructed. A sixth capitol building
15344-448: The state. The Tri-State Tornado of 1925 killed 695 people in three states; 613 of the victims died in Illinois. Chicago is the largest city in the state and the third-most populous city in the United States, with a population of 2,746,388 in 2020. Furthermore, over 7 million residents of the Chicago metropolitan area reside in Illinois. The U.S. Census Bureau currently lists seven other cities with populations of over 100,000 within
15481-473: The state. This includes the Chicago satellite towns of Aurora , Joliet , Naperville , and Elgin , as well as the cities of Rockford , the most populous city in the state outside of the Chicago area; Springfield , the state's capital; and Peoria . The most populated city in the state south of Springfield is Belleville , with 42,000 residents. It is located in the Metro East region of Greater St. Louis ,
15618-415: The stipulation that the laws had to have been passed previously in one of the original thirteen states. The laws restructured the court system then in effect in the Northwest Territory. They also protected residents against excessive taxes and declared that English common law would be the basis of legal decisions and laws in the Northwest Territory. The young United States government, deeply in debt following
15755-724: The territory and its successors was settled by emigrants passing through the Cumberland Narrows , or along the Mohawk Valley in New York State. The Continental Congress' title to the lands north of the Ohio River was derived from the Treaty of Paris (1783), the Treaty of Fort McIntosh, and the cessions of four states. Settlement was through several means: squatters, direct U.S. government land sales to settlers, sales of tracts of land to land companies, and state sales of land to veterans in
15892-430: The territory would eventually form three to five new states. Under the Northwest Ordinance of 1787, which created the Northwest Territory, General St. Clair was appointed governor. When the territory was divided in 1800, he briefly served as governor of the Northwest Territory remnant that included Ohio, the eastern half of Michigan, and a sliver of southeastern Indiana called "The Gore". St. Clair formally established
16029-444: The territory: Virginia claimed all of the portion that was formerly Illinois Country and Ohio Country; Massachusetts claimed the portion that is now southern Michigan and Wisconsin; Connecticut claimed a narrow strip across the territory just south of the Great Lakes; New York claimed an elastic portion of Iroquois lands between Lake Erie and the Ohio River. The western boundary of Pennsylvania was also ill-defined. Virginia's jurisdiction
16166-409: The then-owned land of the United States west of Pennsylvania , east of the Mississippi River , and northwest of the Ohio River . It incorporated most of the former Ohio Country except a portion in western Pennsylvania, and eastern Illinois Country . It covered all of the modern states of Ohio, Indiana, Illinois, Michigan, and Wisconsin, as well as the northeastern part of Minnesota. Lands west of
16303-493: The waterways of the Illinois area for thousands of years before the arrival of Europeans. The Koster Site has been excavated and demonstrates 7,000 years of continuous habitation. Cahokia , the largest regional chiefdom and Urban Center of the Pre-Columbian Mississippian culture , was located near present-day Collinsville, Illinois . They built an urban complex of more than 100 platform and burial mounds ,
16440-479: The way for white settlement. In 1789, he succeeded in getting certain Native Americans to sign the Treaty of Fort Harmar , but many native leaders had not been invited to participate in the negotiations or had refused to do so. Rather than settling the Native Americans' claims, the treaty provoked an escalation of the "Northwest Indian War" (or "Little Turtle's War"). Mutual hostilities led to a campaign by General Josiah Harmar , whose 1,500 militiamen were defeated by
16577-600: The western frontier. Wayne was commissioned to form a new army of 5120 professional soldiers, dubbed the "Legion of the United States". Wayne recruited and trained his army in Pennsylvania, and moved them to southwestern Ohio in fall of 1793. There they were joined by the Kentucky Militia under Major General Charles Scott . Over the next ten months, the armies marched north up the Great Miami and Maumee River valleys toward
16714-455: Was Illinois's largest city. With the tremendous growth of mines and factories in the state in the 19th century, Illinois was the ground for the formation of labor unions in the United States . In 1847, after lobbying by Dorothea L. Dix , Illinois became one of the first states to establish a system of state-supported treatment of mental illness and disabilities, replacing local almshouses . Dix came into this effort after having met J. O. King,
16851-569: Was adopted in 1970, replacing the 1870 document. The first Farm Aid concert was held in Champaign to benefit American farmers, in 1985. The worst upper Mississippi River flood of the century, the Great Flood of 1993 , inundated many towns and thousands of acres of farmland. Illinois entered the 21st century under Republican Governor George Ryan . Near the end of his term in January 2003, following
16988-457: Was an early claimant to much of Illinois. The Illinois Territory was created on February 3, 1809, with its capital at Kaskaskia , an early French settlement. During the discussions leading up to Illinois's admission to the Union , the proposed northern boundary of the state was moved twice. The original provisions of the Northwest Ordinance had specified a boundary that would have been tangent to
17125-497: Was at Putnam's recommendation that the land was surveyed and laid out in townships of six miles square. He organized and led the first group of veterans to the territory. They settled at Marietta, Ohio , where they built a large fort called Campus Martius . Putnam and Cutler insisted the Northwest Territory be a free territory, with no slavery. The Northwest Territory doubled the size of the United States, and establishing it as free of slavery proved to be of tremendous importance in
17262-625: Was born and raised in the state. Illinois honors Lincoln with its official state slogan Land of Lincoln . The state is the site of the Abraham Lincoln Presidential Library and Museum in Springfield and the future home of the Barack Obama Presidential Center in Chicago. Illinois has a highly diverse economy , with the global city of Chicago in the northeast, major industrial and agricultural hubs in
17399-442: Was erected in 1867, which continues to serve as the Illinois capitol today. Though it was ostensibly a " free state ", there was nonetheless slavery in Illinois . The ethnic French had owned black slaves since the 1720s, and American settlers had already brought slaves into the area from Kentucky . Slavery was nominally banned by the Northwest Ordinance, but that was not enforced for those already holding slaves. When Illinois became
17536-516: Was extended westward to a point five degrees of longitude (about 260 miles) from the Delaware River and the western boundary extended to run due north from the westernmost extent of the Mason–Dixon line to the 43rd parallel. This incorporated the eastern part of Ohio Country as western Pennsylvania, and set the eastern boundary of federal lands. "Unlanded" states, such as Maryland, refused to ratify
17673-515: Was largely undisturbed by urban development. It was also home to several Native American cultures, including the Delaware , Miami , Potawatomi , Shawnee , and others. There were a handful of French colonial settlements remaining, plus Clarksville at the Falls of the Ohio. By the time of the territory's dissolution, there were dozens of towns and settlements, a few with thousands of settlers, chiefly along
17810-474: Was limited to a few French settlements at the extreme western edge of the territory. Massachusetts's and Connecticut's claims were effectively lines on paper. New York had no colonial settlements or territorial government in the claimed lands. The western border of Pennsylvania, previously assumed to run in a north by northeast zigzag, was resolved in 1780 by the Continental Congress. The Mason–Dixon line
17947-514: Was replaced by Joseph Gilman . There were three secretaries: Winthrop Sargent (July 9, 1788 – May 31, 1798); William Henry Harrison (June 29, 1798 – December 31, 1799); and Charles Willing Byrd (January 1, 1800 – March 1, 1803). Illinois Illinois ( / ˌ ɪ l ɪ ˈ n ɔɪ / IL -in- OY ) is a state in the Midwestern region of the United States . It borders
18084-635: Was submerged beneath a shallow sea and located near the Equator. Diverse marine life lived at this time, including trilobites , brachiopods , and crinoids . Changing environmental conditions led to the formation of large coal swamps in the Carboniferous . Illinois was above sea level for at least part of the Mesozoic , but by its end was again submerged by the Western Interior Seaway . This receded by
18221-476: Was sufficient, and these assumed local administrative and judicial functions. Washington County was the first of these, at Marietta in 1788. This was an important event, as this court was the first establishment of civil and criminal law in the pioneer country. As soon as the number of free male settlers exceeded 5,000, the territorial legislature was to be created, and this happened in 1798. The full mechanisms of government were put in place, as outlined in
18358-614: Was topped by a structure thought to have measured about 105 ft (32 m) in length and 48 ft (15 m) in width, covered an area 5,000 sq ft (460 m ), and been as much as 50 ft (15 m) high, making its peak 150 ft (46 m) above the level of the plaza. The finely crafted ornaments and tools recovered by archaeologists at Cahokia include elaborate ceramics, finely sculptured stonework, carefully embossed and engraved copper and mica sheets, and one funeral blanket for an important chief fashioned from 20,000 shell beads. These artifacts indicate that Cahokia
18495-583: Was true everywhere in Ohio before 1800 except the northwest sector above the Greenville Treaty line. It became true in Indiana after the Battle of Tippecanoe in 1811; by 1813 Battle of the Thames where Tecumseh was defeated and killed, the frontier had essentially moved to west of the Mississippi. The first U.S. military garrisons in the territory were Fort Patrick Henry, Vincennes, Indiana (1779), Fort Clark at Falls of
18632-492: Was truly an urban center, with clustered housing, markets, and specialists in toolmaking, hide dressing, potting, jewelry making, shell engraving, weaving and salt making. The civilization vanished in the 15th century for unknown reasons, but historians and archeologists have speculated that the people depleted the area of resources. Many indigenous tribes engaged in constant warfare. According to Suzanne Austin Alchon, "At one site in
18769-541: Was −38 °F (−39 °C), recorded on January 31, 2019, during the January 2019 North American cold wave at a weather station near Mount Carroll , and confirmed on March 5, 2019. This followed the previous record of −36 °F (−38 °C) recorded on January 5, 1999, near Congerville . Prior to the Mount Carroll record, a temperature of −37 °F (−38 °C) was recorded on January 15, 2009, at Rochelle , but at
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