Fayette County, Illinois
Fayette County | |
|---|---|
Location within the U.S. state of Illinois | |
Illinois's location within the U.S. | |
| Coordinates: 39°00′N 89°01′W / 39°N 89.02°W | |
| Country | United States |
| State | Illinois |
| Founded | 1821 |
| Named after | Marquis de Lafayette |
| Seat | Vandalia |
| Largest city | Vandalia |
| Area | |
• Total | 725 sq mi (1,880 km2) |
| • Land | 716 sq mi (1,850 km2) |
| • Water | 8.9 sq mi (23 km2) 1.2% |
| Population (2020) | |
• Total | 21,488 |
• Estimate (2023) | 21,164 |
| • Density | 30/sq mi (11/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 15th |
| Website | www |
Fayette County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 21,488. Its county seat is Vandalia, the site of the Vandalia State House State Historic Site. Ramsey Lake State Recreation Area is located in the northwestern part of this county.