Home Insurance in Alton, Illinois
Homes in Alton carry a median value of $103,700 - 40% lower than the Madison County median.
The typical home in Alton was built around 1953. Because older housing stock often has aging wiring, roofing or plumbing, it can cost more to insure or rebuild. About 65% of homes were built before 1960, about 28 points above Madison County's 36%.
Housing in Alton breaks down to 77% single-family homes, 10% apartments in buildings with 5+ units and 3% mobile or manufactured homes. The rest are 2-4 unit or other housing types.
About 59% of owner-occupied homes in Alton have a mortgage. Lenders require hazard (homeowners) insurance on any home carrying a mortgage.
Alton has an owner-occupancy rate of 60% and a vacancy rate of 15%; unoccupied homes typically need a different coverage form.
62% of homes in Alton are primarily heated with natural gas.
What's the biggest home insurance risk near Alton? FEMA's National Risk Index points to tornado (Relatively High) in Madison County and Madison County had 934 active NFIP flood policies as of September 2026. See the full Madison County home insurance overview for all FEMA hazard ratings and flood coverage details.
According to the NAIC homeowners insurance report (2023 data), a standard HO-3 homeowners policy in Illinois carries a statewide average premium of $1,480 per year.
Key figures
| Median home value | $103,700 |
|---|---|
| Median year built | 1953 |
| Owner-occupied share | 60% |
| Share of owner-occupied homes with a mortgage | 59% |
| Top county hazard | Tornado (Relatively High) |
| Active NFIP policies in Madison County | 934 |
| 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)