Clay County, Illinois
|Clay County, Illinois|
Clay County Courthouse in Louisville
Location in the state of Illinois
Illinois's location in the U.S.
|Named for||Henry Clay|
|• Total||470 sq mi (1,217 km2)|
|• Land||468 sq mi (1,212 km2)|
|• Water||1.3 sq mi (3 km2), 0.3%|
|• Density||29/sq mi (11/km²)|
|Time zone||Central: UTC-6/-5|
Clay County was formed in 1824 out of portions of Wayne, Crawford, and Fayette counties. Its name is in honor of Henry Clay, famous American statesman, member of the United States Senate from Kentucky and United States Secretary of State in the 19th century. Clay was an unsuccessful candidate for President in the year the County was named.
- Jasper County - northeast
- Richland County - east
- Wayne County - south
- Marion County - west
- Fayette County - northwest
- Effingham County - north
Climate and weather
|Climate chart (explanation)|
In recent years, average temperatures in the county seat of Louisville have ranged from a low of 21 °F (−6 °C) in January to a high of 89 °F (32 °C) in July, although a record low of −25 °F (−32 °C) was recorded in January 1904 and a record high of 111 °F (44 °C) was recorded in July 1936. Average monthly precipitation ranged from 2.49 inches (63 mm) in February to 4.34 inches (110 mm) in June.
|U.S. Decennial Census
As of the 2010 United States Census, there were 13,815 people, 5,697 households, and 3,790 families residing in the county. The population density was 29.5 inhabitants per square mile (11.4/km2). There were 6,404 housing units at an average density of 13.7 per square mile (5.3/km2). The racial makeup of the county was 97.7% white, 0.5% Asian, 0.3% black or African American, 0.2% American Indian, 0.5% from other races, and 0.8% from two or more races. Those of Hispanic or Latino origin made up 1.1% of the population. In terms of ancestry, 21.7% were German, 14.6% were American, 12.6% were Irish, and 8.6% were English.
Of the 5,697 households, 29.5% had children under the age of 18 living with them, 52.1% were married couples living together, 9.4% had a female householder with no husband present, 33.5% were non-families, and 28.9% of all households were made up of individuals. The average household size was 2.37 and the average family size was 2.89. The median age was 42.2 years.
The median income for a household in the county was $38,016 and the median income for a family was $48,659. Males had a median income of $38,191 versus $27,347 for females. The per capita income for the county was $20,802. About 11.2% of families and 16.3% of the population were below the poverty line, including 21.4% of those under age 18 and 14.7% of those age 65 or over.
- Clay City Community Unit District 10
- Dieterich Community Unit School District 30
- Effingham Community Unit School District 40
- Flora Community Unit School District 35
- Jasper County Community Unit School District 1
- North Clay Community Unit School District 25
- South Central Community Unit School District 401
- West Richland Community Unit School District 2
Clay County is divided into these twelve townships:
- United States Census Bureau 2007 TIGER/Line Shapefiles
- United States Board on Geographic Names (GNIS)
- United States National Atlas
- "State & County QuickFacts". United States Census Bureau. Retrieved July 4, 2014.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "Mean Center of Population for the United States: 1790 to 2000" (PDF). United States Census Bureau. Retrieved 2011-09-17.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 83.
- "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Retrieved 2015-07-11.
- "Monthly Averages for Louisville, Illinois". The Weather Channel. Retrieved 2011-01-27.
- "U.S. Decennial Census". United States Census Bureau. Retrieved July 4, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved July 4, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 4, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 4, 2014.
- "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Retrieved 2015-07-11.
- "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2015-07-11.
- "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2015-07-11.
||Fayette County||Effingham County||Jasper County|
|Marion County||Richland County|