Clay County is a county in the southeastern portion of the U.S. state of Illinois. As of the 2020 United States Census, the population was 13,288.[1] Since 1842, its county seat has been Louisville, in the center of the county's area.[2] In 1950, the U.S. Census Bureau placed the mean center of U.S. population in Clay County.[3]

Clay County
Clay County Courthouse in Louisville
Map of Illinois highlighting Clay County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 38°46′N 88°29′W / 38.76°N 88.49°W / 38.76; -88.49
Country United States
State Illinois
FoundedDecember 23, 1824 (created)
March 8, 1825 (organized)
Named forHenry Clay
SeatLouisville
Largest cityFlora
Area
 • Total
469.59 sq mi (1,216.2 km2)
 • Land468.32 sq mi (1,212.9 km2)
 • Water1.28 sq mi (3.3 km2)  0.3%
Population
 (2020)
 • Total
13,288
 • Estimate 
(2023)
12,999 Decrease
 • Density28/sq mi (11/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district12th
Websiteclaycountyillinois.org

History

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The future Clay County had been inhabited for thousands of years by the Illiniwek Indians (the remains of an Indian village's burial ground are still visible west of Ingraham). White explorers used or cleared a trail between the future settlements of Saint Louis in Missouri, to Vincennes in Indiana; this became a mail route in 1805. The first white settler (McCauley, from Kentucky) built a cabin in 1809 near this road at its intersection with a trail from Vandalia to Mt. Carmel. He was driven out by the Indians, but had returned by 1819, by which time other cabins had been constructed in the area, which was originally called Habbardsville. The Indians were removed from the area in 1828.[4]

Clay County was authorized by act of the state legislature on December 23, 1824, by partitioning portions of Wayne, Crawford, and Fayette counties.[4] It was named for American statesman Henry Clay,[5] a member of the United States Senate from Kentucky and United States Secretary of State. Clay was a candidate for president in 1824.

The first appointed commissioners met on March 8, 1825, to organize the county government. Land for county building purposes was donated near Habbardsville. The commissioners accepted the offer, renamed it Maysville, and had a two-room courthouse erected on the property by the end of the year.[6] The seat remained at that location (about a mile south of the present community of Clay City) through 1841, and in 1842 the county government began functioning in Louisville, being at the center of the county's area.[4]

The first railroad line through Clay County was laid between 1850 and 1854, the Ohio and Mississippi Line.[4] By 1855–56, the Illinois Central Railroad had also been constructed across the northwest corner of the county.

Geography

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The low rolling hills of Clay County are devoted to agricultural production. The various drainage areas are still largely wooded. The Little Wabash River flows southeastward through the center of the county, while Muddy Creek drains the eastern portion (the meanders of Little Muddy delineate a portion of the county's east border with Richland County). Buck Creek, in the south part of the county, flows eastward and joins the Little Wabash above Clay City. Raccoon Creek flows southeastward from the lower part of the county into Wayne County.[7] The highest point on the terrain (646 feet/197 meters ASL) is a small point along the western border with Marion County.[8]

The county produced excellent timber during the nineteenth century, and some sandstone and limestone. The soil is light and not considered adapted to farming on a large scale.[4]

According to the U.S. Census Bureau, the county has a total area of 470 square miles (1,200 km2), of which 468 square miles (1,210 km2) is land and 1.3 square miles (3.4 km2) (0.3%) is water.[9]

Adjacent counties

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Major highways

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Protected areas

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  • Martin T Snyder Memorial Nature Preserve[10]

Cities

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Villages

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Unincorporated communities

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Townships

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Climate and weather

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Louisville, Illinois
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
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2.7
 
 
38
21
 
 
2.5
 
 
44
25
 
 
4
 
 
55
34
 
 
4.1
 
 
67
43
 
 
4.3
 
 
76
53
 
 
4.3
 
 
85
62
 
 
3.9
 
 
89
65
 
 
3.3
 
 
87
63
 
 
3.2
 
 
80
56
 
 
3
 
 
69
45
 
 
4.1
 
 
55
35
 
 
3.4
 
 
43
25
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[11]
Metric conversion
J
F
M
A
M
J
J
A
S
O
N
D
 
 
70
 
 
3
−6
 
 
63
 
 
7
−4
 
 
102
 
 
13
1
 
 
105
 
 
19
6
 
 
109
 
 
24
12
 
 
110
 
 
29
17
 
 
99
 
 
32
18
 
 
85
 
 
31
17
 
 
81
 
 
27
13
 
 
77
 
 
21
7
 
 
104
 
 
13
2
 
 
85
 
 
6
−4
Average max. and min. temperatures in °C
Precipitation totals in mm

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.[11]

Demographics

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Historical population
CensusPop.Note
1830755
18403,228327.5%
18504,28932.9%
18609,336117.7%
187015,87570.0%
188016,1922.0%
189016,7723.6%
190019,55316.6%
191018,661−4.6%
192017,684−5.2%
193016,155−8.6%
194018,94717.3%
195017,445−7.9%
196015,815−9.3%
197014,735−6.8%
198015,2833.7%
199014,460−5.4%
200014,5600.7%
201013,815−5.1%
202013,288−3.8%
2023 (est.)12,999[12]−2.2%
US Decennial Census[13]
1790-1960[14] 1900-1990[15]
1990-2000[16] 2010[17]
 
2000 census age pyramid for Clay County

2010 census

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As of the 2010 United States Census, there were 13,815 people, 5,697 households, and 3,790 families in the county.[18] 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).[9] 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.[18] In terms of ancestry, 21.7% were German, 14.6% were American, 12.6% were Irish, and 8.6% were English.[19]

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.[18]

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.[20]

Education

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  • 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

Politics

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As part of Upper Southern-leaning Southern Illinois, Clay County is powerfully Republican. No Democratic presidential nominee has won a majority in Clay County since Lyndon Johnson’s 1964 landslide, and typically for the region recent presidential elections have seen dramatic declines in Democratic support.[21]

United States presidential election results for Clay County, Illinois[22]
Year Republican Democratic Third party(ies)
No.  % No.  % No.  %
2024 5,610 82.88% 1,054 15.57% 105 1.55%
2020 5,629 81.59% 1,129 16.36% 141 2.04%
2016 5,021 79.07% 1,020 16.06% 309 4.87%
2012 4,190 70.92% 1,584 26.81% 134 2.27%
2008 3,926 60.72% 2,425 37.50% 115 1.78%
2004 4,416 67.38% 2,101 32.06% 37 0.56%
2000 3,789 61.76% 2,212 36.06% 134 2.18%
1996 2,703 43.40% 2,750 44.16% 775 12.44%
1992 2,471 37.15% 2,962 44.53% 1,219 18.33%
1988 3,494 55.65% 2,761 43.97% 24 0.38%
1984 4,562 64.22% 2,524 35.53% 18 0.25%
1980 4,447 61.20% 2,587 35.60% 232 3.19%
1976 3,860 49.94% 3,837 49.64% 32 0.41%
1972 5,283 64.92% 2,844 34.95% 11 0.14%
1968 4,429 55.46% 2,878 36.04% 679 8.50%
1964 3,665 44.61% 4,551 55.39% 0 0.00%
1960 5,134 60.13% 3,394 39.75% 10 0.12%
1956 5,079 58.73% 3,553 41.08% 16 0.19%
1952 5,254 60.38% 3,432 39.44% 15 0.17%
1948 3,782 53.21% 3,160 44.46% 166 2.34%
1944 4,484 55.29% 3,531 43.54% 95 1.17%
1940 5,185 50.72% 4,934 48.27% 103 1.01%
1936 4,528 48.25% 4,752 50.64% 104 1.11%
1932 3,373 41.83% 4,565 56.61% 126 1.56%
1928 4,522 65.16% 2,418 34.84% 0 0.00%
1924 3,432 49.60% 2,987 43.17% 500 7.23%
1920 3,683 59.90% 2,358 38.35% 108 1.76%
1916 3,879 50.43% 3,574 46.46% 239 3.11%
1912 1,622 37.36% 1,926 44.37% 793 18.27%
1908 2,250 49.53% 2,152 47.37% 141 3.10%
1904 2,408 53.19% 1,935 42.74% 184 4.06%
1900 2,356 49.45% 2,295 48.17% 113 2.37%
1896 2,155 47.89% 2,272 50.49% 73 1.62%
1892 1,774 45.64% 1,604 41.27% 509 13.09%

See also

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38°46′N 88°29′W / 38.76°N 88.49°W / 38.76; -88.49

References

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  1. ^ "Clay County, Illinois". United States Census Bureau. Retrieved June 8, 2023.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ "Mean Center of Population for the United States: 1790 to 2000" (PDF). US Census Bureau. Archived from the original (PDF) on November 3, 2001. Retrieved September 17, 2011.
  4. ^ a b c d e "A History of Southern Illinois". The USGenWeb Project. 1912. pp. 439–442. Retrieved October 24, 2020.
  5. ^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 83.
  6. ^ "Larry Brant - Village of Clay City". Archived from the original on February 28, 2009. Retrieved October 24, 2020.
  7. ^ Clay County IL (Google Maps, accessed 24 October 2020)
  8. ^ Clay County High Point IL (PeakBagger.com, accessed 24 October 2020)
  9. ^ a b "Population, Housing Units, Area, and Density: 2010 - County". US Census Bureau. Archived from the original on February 12, 2020. Retrieved July 11, 2015.
  10. ^ Martin T Snyder Nature Preserve, Flora IL (Google Maps, accessed 24 October 2020)
  11. ^ a b "Monthly Averages for Louisville, Illinois". The Weather Channel. Retrieved January 27, 2011.
  12. ^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023". United States Census Bureau. Retrieved April 2, 2024.
  13. ^ "US Decennial Census". US Census Bureau. Retrieved July 4, 2014.
  14. ^ "Historical Census Browser". University of Virginia Library. Archived from the original on August 11, 2012. Retrieved July 4, 2014.
  15. ^ "Population of Counties by Decennial Census: 1900 to 1990". US Census Bureau. Retrieved July 4, 2014.
  16. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). US Census Bureau. Retrieved July 4, 2014.
  17. ^ "State & County QuickFacts". US Census Bureau. Archived from the original on June 6, 2011. Retrieved July 4, 2014.
  18. ^ a b c "Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". US Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
  19. ^ "Selected Social Characteristics in the US – 2006-2010 American Community Survey 5-Year Estimates". US Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
  20. ^ "Selected Economic Characteristics – 2006-2010 American Community Survey 5-Year Estimates". US Census Bureau. Archived from the original on February 13, 2020. Retrieved July 11, 2015.
  21. ^ Cohn, Nate; ‘Demographic Shift: Southern Whites’ Loyalty to G.O.P. Nearing That of Blacks to Democrats’, The New York Times, April 24, 2014
  22. ^ Leip, David. "Atlas of US Presidential Elections". uselectionatlas.org. Retrieved October 31, 2018.
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