28-523: Declo is a city in Cassia County , Idaho , United States. It is part of the Burley, Idaho micropolitan area . The population was 338 at the time of the 2020 Census , down from 343 in 2010. The city was originally named Marshfield. In 1916, the name was changed to Declo. The Central Post Office told the community to choose another name not to exceed five letters. the last initials of the first five men to enter
56-589: A reservoir on the Snake River , at 4,134 feet (1,260 m). The northern half of the county is part of the Magic Valley region of the Snake River Plain , and numerous mountain ranges extend north from the southern boundary and diminish as they approach the river, which flows from east to west. The Silent City of Rocks National Reserve , containing exposed granitic batholith as old as 2.5 billion years,
84-691: A population of 24,655. The county seat and largest city is Burley . Cassia County is included in the Burley, ID Micropolitan Statistical Area . The first Europeans explored the Milner area in Cassia County in 1811. It was trappers who initially developed the Oregon Trail, which ran on the county's northern border. The Raft River's junction with the Oregon Trail marked the split for the California Trail. While
112-663: Is in Idaho's 2nd congressional district and represented by Congressman Mike Simpson . At the state level, Cassia County is in Legislative District 27 , represented by Senator Kelly Anthon of Declo, Douglas Pickett of Oakley and Clay Handy of Burley. At every level, Cassia County is a Republican Party stronghold. All county-level offices are held by Republicans and have been for decades. Republican primaries are tantamount to election to office, as Democrats rarely field challenges for county or state legislative office. Cassia County
140-627: Is located at 42°31′10″N 113°37′48″W / 42.51944°N 113.63000°W / 42.51944; -113.63000 (42.519441, -113.629978), at an elevation of 4,219 feet (1,286 m) above sea level . According to the United States Census Bureau , the city has a total area of 0.28 square miles (0.73 km), all of it land. The Hillside Letter "D" can be seen in the southeast ( 42°17′05″N 113°20′38″W / 42.2847°N 113.3439°W / 42.2847; -113.3439 ( Emmett ) ) According to
168-600: Is located in the southern part of the county. As of the 2010 United States Census , there were 22,952 people, 7,666 households, and 5,758 families living in the county. The population density was 8.9 inhabitants per square mile (3.4/km ). There were 8,372 housing units at an average density of 3.3 units per square mile (1.3 units/km ). The racial makeup of the county was 81.8% white, 0.8% American Indian, 0.5% Asian, 0.3% black or African American, 0.1% Pacific islander, 14.2% from other races, and 2.3% from two or more races. Those of Hispanic or Latino origin made up 24.9% of
196-460: Is named after him. According to the U.S. Census Bureau , the county has a total area of 2,580 square miles (6,700 km ), of which 2,565 square miles (6,640 km ) is land and 15 square miles (39 km ) (0.6%) is water. The county's highest point is Cache Peak at an elevation of 10,339 feet (3,151 m) above sea level in the Albion Mountains , and the lowest is Milner Lake ,
224-447: Is often difficult, since methodologies, definitions and data quality can vary greatly. Since the 1990s, the OECD has conducted regular surveys among its 38 member countries using a standardized methodology and set of questions. Per capita income is often used to measure a sector's average income and compare the wealth of different populations. Per capita income is also often used to measure
252-508: Is one of the most consistently Republican counties in the state, and in the gubernatorial election of 2010 Republican Butch Otter carried Cassia County with 76.54% to Democrat Keith Allred's 16.73%. In the presidential election of 2012 , Mitt Romney , whose father lived for a few years in his youth in Oakley, carried Cassia County with 85.2% while Barack Obama received 13.1%. The last Democratic presidential candidate to carry Cassia County
280-491: Is served primarily by one school district, Cassia Joint School District #151 , which was consolidated in the 1950s. Other portions are in: The county is in the catchment area, but not the taxation zone, for College of Southern Idaho . High Schools Jr. High Schools Elementary Schools 42°16′N 113°37′W / 42.27°N 113.61°W / 42.27; -113.61 Per capita income Per capita income ( PCI ) or average income measures
308-475: The Köppen Climate Classification system, Declo has a semi-arid climate , abbreviated "BSk" on climate maps. As of the census of 2010, there were 343 people, 115 households, and 87 families residing in the city. The population density was 1,225.0 inhabitants per square mile (473.0/km). There were 127 housing units at an average density of 453.6 per square mile (175.1/km). The racial makeup of
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#1733085239952336-612: The House. Bruce Newcomb of Burley also served as Speaker from 1998 to 2006. Though born in Burley, Congressman Simpson now lives in Idaho Falls . The only other member of congress with ties to the county is Henry Dworshak who represented Idaho's 2nd congressional district and later served in the Senate . He lived in Burley and was the publisher of the Burley Bulletin . A Burley elementary school
364-514: The Oregon Shortline was constructed through the town. Declo was settled under the name of Marshfield by 1909. Cassia County was created from Owyhee County on February 20, 1879, with Albion becoming the county seat. A western portion became Twin Falls County in 1907. The county assumed its present boundaries when an eastern portion became Power County on January 30, 1913. The county seat
392-520: The Oregon and California trails brought hundreds of thousands of emigrants through Cassia County, it also brought settlers. A stage line through the county was established between Kelton, Utah and Boise, Idaho in 1869. A stage station existed at City of Rocks. Additional stations were spaced at increments of 10–12 miles between stations to include one at Oakley Meadows, in the Goose Creek valley two miles west of
420-420: The age of 18 living with them, 66.0% were married couples living together, 14.6% had a female householder with no husband present, and 14.6% were non-families. 10.7% of all households were made up of individuals, and 2.9% had someone living alone who was 65 years of age or older. The average household size was 3.28 and the average family size was 3.57. In the city, the population was spread out, with 38.5% under
448-460: The age of 18, 8.3% from 18 to 24, 26.6% from 25 to 44, 16.9% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 27 years. For every 100 females, there were 98.8 males. For every 100 females age 18 and over, there were 110.1 males. The median income for a household in the city was $ 36,528, and the median income for a family was $ 39,286. Males had a median income of $ 32,083 versus $ 18,750 for females. The per capita income for
476-510: The area by 1885. Settlement at Malta occurred prior to 1890, as the Malta precinct had 172 residents at the 1890 census. Albion State Normal School was established at Albion in 1893. The school was focused on training Idaho teachers until 1951 when its programs were transferred to Idaho State College (now Idaho State University) in Pocatello. Burley was platted and settled in 1905 after a branch of
504-489: The average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such as the American Community Survey . This allows the calculation of per capita income for both the country as a whole and specific regions or demographic groups. However, comparing per capita income across different countries
532-543: The city was $ 12,884. About 9.4% of families and 9.5% of the population were below the poverty line , including 9.0% of those under age 18 and none of those age 65 or over. Declo is part of the Cassia County School District . The following schools are located in Declo: Cassia County, Idaho Cassia County is a county in the U.S. state of Idaho . As of the 2020 Census the county had
560-541: The city was 85.1% White , 4.1% Native American , 9.9% from other races , and 0.9% from two or more races. Hispanic or Latino of any race were 15.2% of the population. There were 115 households, of which 45.2% had children under the age of 18 living with them, 51.3% were married couples living together, 15.7% had a female householder with no husband present, 8.7% had a male householder with no wife present, and 24.3% were non-families. 21.7% of all households were made up of individuals, and 9.6% had someone living alone who
588-467: The city. The population density was 1,226.7 inhabitants per square mile (473.6/km). There were 113 housing units at an average density of 410.1 per square mile (158.3/km). The racial makeup of the city was 75.44% White , 0.59% African American , 0.30% Native American , 23.37% from other races , and 0.30% from two or more races. Hispanic or Latino of any race were 27.22% of the population. There were 103 households, out of which 48.5% had children under
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#1733085239952616-420: The population. In terms of ancestry, 22.3% were English , 11.8% were German , 10.6% were American , and 5.1% were Irish . Of the 7,666 households, 41.9% had children under the age of 18 living with them, 60.8% were married couples living together, 9.1% had a female householder with no husband present, 24.9% were non-families, and 21.5% of all households were made up of individuals. The average household size
644-493: The post office were recorded: August Detlef, George Eldredge, Hyrum Lewis, James Cooley, and Carl Osterhout. The Central Post Office said they preferred Declo instead of Delco, and such it was named. The J. R. Simplot Company was founded in 1923 near Declo by 14-year-old entrepreneur J. R. Simplot , who had moved to the area with his family as a toddler. The corporate headquarters for the company are now located in Boise . Declo
672-541: The present settlement of Oakley. William Oakley settled at the Oakley Meadows station in 1870. Cattle operations also developed starting in 1872. Settlement began at nearby Albion in 1873 with significant Mormon settlement in 1875. By 1880, Albion had a population of 257. Mormon settlement at Oakley also began on June 1, 1878, when four Mormon men each staked out 160 acres for their settlement. Settlements remained primarily agricultural with more than 38,000 head of cattle in
700-777: Was Franklin Roosevelt in the election of 1940 edging out Wendell Willkie by around 100 votes. State legislators from Cassia County traditionally hold their seats for long periods of time. Two of the longest serving legislators in Idaho history were from Cassia County: Vard Chatburn of Albion who served in the House of Representatives from 1957 to 1986 and Denton Darrington in the Senate who served from 1982 to 2012. Because legislators rarely lose their seats, legislators representing Cassia County are often in leadership or chair committees. From 2012 to 2023, Representative Scott Bedke served as Speaker of
728-475: Was 2.96 and the average family size was 3.46. The median age was 32.0 years. The median income for a household in the county was $ 39,866 and the median income for a family was $ 47,995. Males had a median income of $ 36,402 versus $ 22,156 for females. The per capita income for the county was $ 17,782. About 12.4% of families and 15.4% of the population were below the poverty line , including 18.7% of those under age 18 and 8.1% of those age 65 or over. Cassia County
756-487: Was 65 years of age or older. The average household size was 2.98 and the average family size was 3.44. The median age in the city was 29.8 years. 35.6% of residents were under the age of 18; 8.7% were between the ages of 18 and 24; 22.3% were from 25 to 44; 22.4% were from 45 to 64; and 10.8% were 65 years of age or older. The gender makeup of the city was 50.1% male and 49.9% female. As of the census of 2000, there were 338 people, 103 households, and 87 families residing in
784-552: Was moved to Burley in 1918. The county was named for Cassia Creek, which in turn was named either for John Cazier, a member of the Mormon Battalion and an emigrant train captain, or for a plant found in the area. Similar to other Idaho counties, an elected three-member county commission heads the county government. Other elected officials include clerk , treasurer, sheriff , assessor , coroner , and prosecutor . County Commission Other Elected Officials Cassia County
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