Clay County | |
---|---|
![]() Clay County Courthouse in Louisville | |
![]() Location within the U.S. state of Illinois | |
![]() Illinois's location within the U.S. | |
Coordinates: 38°46′N 88°29′W / 38.76°N 88.49°W | |
Country | ![]() |
State | ![]() |
Founded | December 23, 1824 (created) March 8, 1825 (organized) |
Named for | Henry Clay |
Seat | Louisville |
Largest city | Flora |
Area | |
• Total | 469.59 sq mi (1,216.2 km2) |
• Land | 468.32 sq mi (1,212.9 km2) |
• Water | 1.28 sq mi (3.3 km2) 0.3% |
Population (2020) | |
• Total | 13,288 |
• Density | 28/sq mi (11/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 12th |
Website | claycountyillinois |
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]