Belvidere is located in Boone County, IL. The population is 25,746, making Belvidere the largest city in Boone County.
There are 12 public schools in Belvidere with an average Homefacts rating of B-. The total crime rate for Belvidere is very low , and there are 35 registered sex offenders residing in the city. Unemployment in Belvidere is moderate and the median home sales price is $0. Detailed and up-to-date Belvidere property reports are available for any property address.