Belvidere Flag

Belvidere

County:
Boone County
County Seat:
Yes
Area (mi²):
12.777
State:
Illinois

Belvidere is a city located in Boone County, Illinois. Belvidere has a 2026 population of 25,325. It is also the county seat of Boone County. Belvidere is currently growing at a rate of 0.06% annually and its population has increased by 0.21% since the most recent census, which recorded a population of 25,271 in 2020.

25.3K
Total Population
1,982
Density (mi²)
16 0.06%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)