Clinton County
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Location within the U.S. state of Illinois
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Illinois's location within the U.S.
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| Coordinates: 38°37′N 89°25′W / 38.61°N 89.42°W / 38.61; -89.42 | |
| Country |  United States |
| State |  Illinois |
| Founded | 1824 |
| Named for | DeWitt Clinton |
| Seat | Carlyle |
| Largest city | Breese |
| Area | |
| • Total | 503 sq mi (1,300 km2) |
| • Land | 474 sq mi (1,230 km2) |
| • Water | 29 sq mi (80 km2) 5.8% |
| Population
(2020)
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| • Total | 36,899 |
| • Density | 73/sq mi (28/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 12th |
| Website | www |
Clinton County is a county located in the U.S. state of Illinois. At the 2020 census, the population was 36,899.[1] Its county seatisCarlyle.[2]
In 1960, the United States Census Bureau placed the mean center of U.S. population in Clinton County.[3]
Clinton County is part of the St. Louis, MO-IL Metropolitan Statistical Area.
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In 1805, prior to the establishment of the county, the territorial government established a post road from its capital (Vincennes, Indiana) to St. Louis, Missouri, passing through the county.[4] In 1808 a wagon road was laid out through the future Clinton County. It extended from the Goshen Settlement to the Ohio salt works and crossed the Kaskaskia River at Carlyle.[5]
Clinton County was created on December 27, 1824, from portions of Washington, Fayette, and Bond Counties. It was named for the seventh Governor of New York, DeWitt Clinton, who helped build the Erie Canal.[6]
Crossing the Kaskaskia became much easier when the bridge now known as the General Dean Suspension Bridge was built in 1859, at a cost of $40,000.[7] Before the bridge was constructed, crossings involved a ferry or a mud bridge.[8][9] The Illinois General Assembly set aside $20,000 for bridge restoration in 1951, and in 1953 the bridge was named after William F. Dean.[7]
According to the U.S. Census Bureau, the county has a total area of 503 square miles (1,300 km2), of which 474 square miles (1,230 km2) is land and 29 square miles (75 km2) (5.8%) is water.[10] Eldon Hazlet State Recreation Area and South Shore State Park are in Clinton County. Its southern border is the Kaskaskia River.
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In recent years, average temperatures in the county seat of Carlyle have ranged from a low of 19 °F (−7 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −22 °F (−30 °C) was recorded in January 1994 and a record high of 104 °F (40 °C) was recorded in July 1980. Average monthly precipitation ranged from 2.17 inches (55 mm) in January to 4.44 inches (113 mm) in June.[11]
US Route 50
Illinois Route 127
Illinois Route 160
Illinois Route 161
Illinois Route 177| Census | Pop. | Note | %± |
|---|---|---|---|
| 1830 | 2,330 | — | |
| 1840 | 3,718 | 59.6% | |
| 1850 | 5,139 | 38.2% | |
| 1860 | 10,941 | 112.9% | |
| 1870 | 16,285 | 48.8% | |
| 1880 | 18,714 | 14.9% | |
| 1890 | 17,411 | −7.0% | |
| 1900 | 19,824 | 13.9% | |
| 1910 | 22,832 | 15.2% | |
| 1920 | 22,947 | 0.5% | |
| 1930 | 21,369 | −6.9% | |
| 1940 | 22,912 | 7.2% | |
| 1950 | 22,594 | −1.4% | |
| 1960 | 24,029 | 6.4% | |
| 1970 | 28,315 | 17.8% | |
| 1980 | 32,617 | 15.2% | |
| 1990 | 33,944 | 4.1% | |
| 2000 | 35,535 | 4.7% | |
| 2010 | 37,762 | 6.3% | |
| 2020 | 36,899 | −2.3% | |
| 2023 (est.) | 36,785 | [12] | −0.3% |
| US Decennial Census[13] 1790-1960[14] 1900-1990[15] 1990-2000[16] 2010[17] | |||
As of the 2010 United States Census, there were 37,762 people, 14,005 households, and 9,760 families residing in the county.[18] The population density was 79.7 inhabitants per square mile (30.8/km2). There were 15,311 housing units at an average density of 32.3 per square mile (12.5/km2).[10] The racial makeup of the county was 93.4% white, 3.5% black or African American, 0.4% Asian, 0.2% American Indian, 1.2% from other races, and 1.1% from two or more races. Those of Hispanic or Latino origin made up 2.8% of the population. In terms of ancestry, 54.8% were German, 9.8% were Irish, 5.8% were English, and 5.6% were American.[19]
Of the 14,005 households, 32.7% had children under the age of 18 living with them, 56.5% were married couples living together, 8.7% had a female householder with no husband present, 30.3% were non-families, and 25.1% of all households were made up of individuals. The average household size was 2.55 and the average family size was 3.02. The median age was 39.3 years.
The median income for a household in the county was $55,278 and the median income for a family was $66,682. Males had a median income of $45,119 versus $34,051 for females. The per capita income for the county was $25,392. About 5.2% of families and 7.8% of the population were below the poverty line, including 9.2% of those under age 18 and 5.7% of those age 65 or over.[20]
| Year | Republican | Democratic | Third party | |||
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| No. | % | No. | % | No. | % | |
| 2020 | 14,304 | 74.45% | 4,493 | 23.38% | 417 | 2.17% |
| 2016 | 12,412 | 71.26% | 3,945 | 22.65% | 1,062 | 6.10% |
| 2012 | 10,524 | 63.86% | 5,596 | 33.95% | 361 | 2.19% |
| 2008 | 9,357 | 54.04% | 7,657 | 44.22% | 300 | 1.73% |
| 2004 | 10,219 | 59.65% | 6,797 | 39.68% | 115 | 0.67% |
| 2000 | 8,588 | 55.67% | 6,436 | 41.72% | 403 | 2.61% |
| 1996 | 6,065 | 43.81% | 6,104 | 44.09% | 1,675 | 12.10% |
| 1992 | 5,771 | 36.47% | 6,686 | 42.26% | 3,365 | 21.27% |
| 1988 | 7,681 | 56.15% | 5,935 | 43.38% | 64 | 0.47% |
| 1984 | 9,233 | 66.43% | 4,628 | 33.30% | 38 | 0.27% |
| 1980 | 8,500 | 62.53% | 4,470 | 32.88% | 623 | 4.58% |
| 1976 | 7,245 | 53.00% | 6,275 | 45.90% | 151 | 1.10% |
| 1972 | 7,931 | 62.39% | 4,756 | 37.41% | 25 | 0.20% |
| 1968 | 6,561 | 53.78% | 4,453 | 36.50% | 1,185 | 9.71% |
| 1964 | 4,692 | 39.00% | 7,339 | 61.00% | 0 | 0.00% |
| 1960 | 5,709 | 47.96% | 6,188 | 51.99% | 6 | 0.05% |
| 1956 | 7,378 | 63.46% | 4,242 | 36.48% | 7 | 0.06% |
| 1952 | 6,760 | 58.18% | 4,853 | 41.76% | 7 | 0.06% |
| 1948 | 5,128 | 51.47% | 4,773 | 47.91% | 62 | 0.62% |
| 1944 | 6,753 | 62.82% | 3,944 | 36.69% | 53 | 0.49% |
| 1940 | 7,582 | 62.00% | 4,558 | 37.27% | 90 | 0.74% |
| 1936 | 3,653 | 32.78% | 5,355 | 48.05% | 2,137 | 19.17% |
| 1932 | 2,548 | 24.35% | 7,736 | 73.92% | 182 | 1.74% |
| 1928 | 3,031 | 30.77% | 6,774 | 68.76% | 47 | 0.48% |
| 1924 | 2,358 | 29.69% | 1,693 | 21.32% | 3,891 | 48.99% |
| 1920 | 4,564 | 63.71% | 1,661 | 23.19% | 939 | 13.11% |
| 1916 | 3,423 | 42.59% | 4,201 | 52.27% | 413 | 5.14% |
| 1912 | 973 | 20.48% | 2,674 | 56.29% | 1,103 | 23.22% |
| 1908 | 2,104 | 39.11% | 3,016 | 56.06% | 260 | 4.83% |
| 1904 | 1,848 | 43.02% | 2,153 | 50.12% | 295 | 6.87% |
| 1900 | 1,964 | 41.60% | 2,637 | 55.86% | 120 | 2.54% |
| 1896 | 1,863 | 41.75% | 2,572 | 57.64% | 27 | 0.61% |
| 1892 | 1,361 | 34.68% | 2,393 | 60.97% | 171 | 4.36% |
Media related to Clinton County, Illinois at Wikimedia Commons
Places adjacent to Clinton County, Illinois
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Municipalities and communities of Clinton County, Illinois, United States
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| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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38°37′N 89°25′W / 38.61°N 89.42°W / 38.61; -89.42
