Shelby County, Illinois
Shelby County | |
|---|---|
Location within the U.S. state of Illinois | |
Illinois's location within the U.S. | |
| Coordinates: 39°23′N 88°49′W / 39.39°N 88.81°W | |
| Country | United States |
| State | Illinois |
| Founded | 1827 |
| Named after | Isaac Shelby |
| Seat | Shelbyville |
| Largest city | Shelbyville |
| Area | |
• Total | 768 sq mi (1,990 km2) |
| • Land | 759 sq mi (1,970 km2) |
| • Water | 9.5 sq mi (25 km2) 1.2% |
| Population (2020) | |
• Total | 20,990 |
• Estimate (2023) | 20,568 |
| • Density | 27/sq mi (11/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 15th |
| Website | www |
Shelby County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 20,990. Its county seat is Shelbyville.