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Clinton County, Illinois

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Clinton County, Illinois

Clinton County, Illinois
Map of Illinois highlighting Clinton County
Location in the state of Illinois
Map of the United States highlighting Illinois
Illinois's location in the U.S.
Founded 1824
Named for DeWitt Clinton
Seat Carlyle
Largest city Breese
 • Total 503 sq mi (1,303 km2)
 • Land 474 sq mi (1,228 km2)
 • Water 29 sq mi (75 km2), 5.8%
 • (2010) 37,762
Congressional district 15th
Time zone Central: UTC-6/-5
Website .gov.illinois.clintoncowww

Clinton County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 37,762.[1] Its county seat is Carlyle.[2]

In 1960, the U.S. 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.


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 what is now Clinton County. The road extended from the Goshen Settlement to the Ohio salt works and crossed the Kaskaskia River at Carlyle.[5]

Clinton County was organized in 1824 out of Washington, Fayette, and Bond Counties. It was named in honor of 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 travelers had been forced to cross by ferry or over 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.

Climate and weather

Carlyle, Illinois
Climate chart ()
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[11]

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]

Major highways

Adjacent counties


2000 census age pyramid for Clinton County

As of the census[16] of 2000, there were 35,535 people, 12,754 households, and 9,221 families residing in the county. The population density was 75 people per square mile (29/km²). There were 13,805 housing units at an average density of 29 per square mile (11/km²). The racial makeup of the county was 94.19% White, 3.91% Black or African American, 0.33% Asian, 0.16% Native American,0.03% Pacific Islander, 0.84% from other races, and 0.54% from two or more races. 1.60% of the population were Hispanic or Latino of any race. 62.1% were of German and 11.0% American ancestry according to Census 2000. 96.8% spoke English, 2.0% Spanish and 1.0% German as their first language.

There were 12,754 households out of which 35.10% had children under the age of 18 living with them, 60.10% were married couples living together, 8.40% had a female householder with no husband present, and 27.70% were non-families. 24.20% of all households were made up of individuals and 11.90% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.10.

In the county the population was spread out with 24.90% under the age of 18, 9.30% from 18 to 24, 30.20% from 25 to 44, 21.30% from 45 to 64, and 14.40% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 106.60 males. For every 100 females age 18 and over, there were 106.80 males.

The median income for a household in the county was $44,618, and the median income for a family was $52,580. Males had a median income of $36,035 versus $23,506 for females. The per capita income for the county was $19,109. About 4.60% of families and 6.40% of the population were below the poverty line, including 7.80% of those under age 18 and 6.00% of those age 65 or over.


  • Carlyle Community Unit School District 1
  • Patoka Community Unit School District 100
  • Sandoval Community Unit School District 501
  • Wesclin Community Unit School District 3
  • Central Community High School, Breese
  • Mater Dei Catholic High School, Breese





Clinton County is divided into fifteen townships:

See also


General references
  • United States Census Bureau 2007 TIGER/Line Shapefiles
  • United States Board on Geographic Names (GNIS)
  • United States National Atlas
Specific references
  1. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved July 4, 2014. 
  2. ^ "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  3. ^ "Mean Center of Population for the United States: 1790 to 2000".  
  4. ^ Douglas K. Meyer (2000). Making the Heartland Quilt. SIU Press. p. 58.  
  5. ^ "" 1913 Commercial History of Clinton County, Illinois from Retrieved 10 NOV 2010
  6. ^ Allan H. Keith, Historical Stories: About Greenville and Bond County, IL. Retrieved August 15, 2007.
  7. ^ a b Attractions & Outdoor Recreation, City of Carlyle, Official site
  8. ^ "Suspension Bridge, Spanning Kaskaskia River, Carlyle, Clinton, IL".  
  9. ^ Plaque on site, Photograph of plaque at Bridgemeister.
  10. ^ "US Gazetteer files: 2010, 2000, and 1990".  
  11. ^ a b "Monthly Averages for Carlyle, Illinois". The Weather Channel. Retrieved 2011-01-27. 
  12. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 4, 2014. 
  13. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 4, 2014. 
  14. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 4, 2014. 
  15. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. Retrieved July 4, 2014. 
  16. ^ "American FactFinder".  

External links

  • Official website
  • Clinton County IL Genealogy Web Project

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