Boone County
- Belvidere, Dunton House, 807 McKinley Avenue (HABS IL-171)
- Belvidere, Jesse Hildrup House, 1215 North State Street (HABS IL-160)
- Belvidere, Newton Farmhouse, Belvidere-Kirkland Road (HABS IL-159)
- Belvidere, Palmer House, 327 West Lincoln Avenue (HABS IL-185)
- Belvidere, Pettit Memorial Chapel, 110 North Main Street (covenant, EXPIRED)
- Belvidere, Wheeler House, 222 West Locust Street (HABS IL-172)