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 | ![]() |
State | ![]() |
Founded | 1837 |
Named for | 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 |
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.[1] Boone County is included in the Rockford, IL Metropolitan Statistical Area.