Boone County, Illinois
Boone County | |
|---|---|
Floyd Hopkins Block in the Belvidere North State Street Historic District | |
Location within the U.S. state of Illinois | |
Illinois's location within the U.S. | |
| Coordinates: 42°20′N 88°49′W / 42.33°N 88.81°W | |
| Country | United States |
| State | Illinois |
| Founded | March 3, 1836 |
| Named after | Daniel Boone |
| Seat | Belvidere |
| Largest city | Belvidere |
| Area | |
• Total | 282.039 sq mi (730.48 km2) |
| • Land | 280.741 sq mi (727.12 km2) |
| • Water | 1.298 sq mi (3.36 km2) |
| Population (2020) | |
• Total | 53,448 |
• Estimate (2023) | 53,202 |
| • Density | 190/sq mi (73/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional districts | 11th, 16th |
| Website | www |
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Boone County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 53,448. Its county seat is Belvidere. Boone County is included in the Rockford, Illinois metropolitan area.