Boone County
County in Illinois
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, IL Metropolitan Statistical Area. Wikipedia
Cities: Belvidere, Poplar Grove, Garden Prairie, and more
County seat: Belvidere
Population: 53,159 (2021)
Named for: Daniel Boone