Home Insurance in Trenton, Illinois
Homes in Trenton carry a median value of $178,200 - 7% lower than the Clinton County median.
Aging wiring, roofing and plumbing in older homes can push up the cost to insure or rebuild them. The typical home in Trenton was built around 1971. About 33% of homes were built before 1960, about 6 points above Clinton County's 27%.
The housing stock in Trenton is 77% single-family homes, 10% apartments in buildings with 5+ units and 1% mobile or manufactured homes. The rest are 2-4 unit or other housing types.
About 56% of owner-occupied homes in Trenton have a mortgage. Lenders require hazard (homeowners) insurance on any home carrying a mortgage.
Trenton has an owner-occupancy rate of 71% and a vacancy rate of 7%; unoccupied homes typically need a different coverage form.
Most homes in Trenton - 67% - are primarily heated with natural gas.
What's the biggest home insurance risk near Trenton? FEMA's National Risk Index points to earthquake (Relatively Moderate) in Clinton County and Clinton County had 42 active NFIP flood policies as of September 2026. See the full Clinton County home insurance overview for all FEMA hazard ratings and flood coverage details. Earthquake damage is excluded from a standard homeowners policy.
In Illinois, the statewide average premium for a standard HO-3 homeowners policy is $1,480 per year (NAIC, 2023 data).
Key figures
| Median home value | $178,200 |
|---|---|
| Median year built | 1971 |
| Owner-occupied share | 71% |
| Share of owner-occupied homes with a mortgage | 56% |
| Top county hazard | Earthquake (Relatively Moderate) |
| Active NFIP policies in Clinton County | 42 |
| Home insurance premium | $1,480 - statewide average (NAIC, 2023 data) |
Nearby towns
Sources
Data last updated: 2026-09-29
- 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)