Home Insurance in Knox County, Illinois
Homes in Knox County carry a median value of $111,900 - 58% lower than the Illinois median.
The typical home in Knox County was built around 1957. Older homes can cost more to insure or rebuild because of aging wiring, roofing and plumbing. About 54% of homes were built before 1960, about 16 points above Illinois's 38%.
Mobile and manufactured homes typically need a manufactured-home (HO-7) policy rather than a standard homeowners policy. The housing stock in Knox County is 78% single-family homes, 11% apartments in buildings with 5+ units and 4% mobile or manufactured homes.
48% of owner-occupied homes in Knox County carry a mortgage, and mortgage lenders require hazard insurance for as long as the loan is active.
About 71% of occupied homes in Knox County are owner-occupied. The vacancy rate is 12%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy.
Homes heated with propane can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies. 67% of homes in Knox County are primarily heated with natural gas.
FEMA's National Risk Index lists strong wind (Relatively High), hail (Relatively Moderate) and tornado (Relatively Moderate) as the leading hazards for Knox County.
As of September 2026, Knox County has 35 active NFIP flood insurance policies. Standard homeowners insurance does not cover flood damage, so flood coverage needs a separate NFIP or private flood policy.
The statewide average premium for a standard HO-3 homeowners policy in Illinois is $1,480 per year, according to the NAIC homeowners insurance report (2023 data).
Key figures
| Median home value | $111,900 |
|---|---|
| Median year built | 1957 |
| Owner-occupied share | 71% |
| Share of owner-occupied homes with a mortgage | 48% |
| Top hazards (FEMA National Risk Index) | Strong Wind (Relatively High), Hail (Relatively Moderate), Tornado (Relatively Moderate) |
| Active NFIP flood policies (county) | 35 |
| Home insurance premium | $1,480 - statewide average (NAIC, 2023 data) |
Towns and cities
- Abingdon
- Altona
- East Galesburg
- Galesburg
- Henderson
- Knoxville
- Maquon
- Oneida
- Rio
- St. Augustine
- Victoria
- Wataga
- Williamsfield
- Yates City
Sources
- U.S. Census Bureau Gazetteer Files (2024)
- U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates (2024)
- FEMA National Risk Index (December 2025)
- FEMA OpenFEMA NFIP Redacted Policies v3 (2026)
- NAIC Dwelling Fire, Homeowners Owner-Occupied, and Homeowners Tenant and Condominium/Cooperative Unit Owners Insurance: Data for 2023 (published 2026) (2023)