Boone County, Illinois

Boone County
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 / 42.33; -88.81
Country	United States
State	Illinois
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
• Density	190/sq mi (73/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional districts	11th, 16th
Website	www.boonecountyil.org

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.