Cheap Apartments For Rent In Belvidere Il . See all 20 1 bedroom apartments in belvidere, il currently available for rent. Search by city, state, property name, neighborhood, or address. Windsor Apartments 902 N Main St, Rockford, IL 61103 Zumper from www.zumper.com As of april 2022, the average apartment rent in belvidere, il is $874 for one bedroom, $952 for two bedrooms, and $953 for three bedrooms. The median rent for the city is $713 a month. Belvidere townhomes for rent ;