Home Insurance in Grundy County, Illinois
The median home value in Grundy County is $271,700, close to the Illinois median.
The typical home in Grundy County was built around 1990. Because older housing stock often has aging wiring, roofing or plumbing, it can cost more to insure or rebuild. About 20% of homes were built before 1960, about 17 points below Illinois's 38%.
In Grundy County, the housing stock is 81% single-family homes, 7% apartments in buildings with 5+ units and 4% mobile or manufactured homes. Mobile and manufactured homes typically need a manufactured-home (HO-7) policy rather than a standard homeowners policy.
In Grundy County, about 67% of owner-occupied homes have a mortgage - lenders require hazard insurance on every mortgaged home.
About 74% of occupied homes in Grundy County are owner-occupied. The vacancy rate is 4%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy.
In Grundy County, 77% of homes are primarily heated with natural gas. Homes heated with propane can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies.
The top hazards for Grundy County, per FEMA's National Risk Index, are tornado (Relatively Moderate), inland flooding (Relatively Low) and strong wind (Relatively Moderate).
Grundy County had 167 active National Flood Insurance Program policies as of September 2026. 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 | $271,700 |
|---|---|
| Median year built | 1990 |
| Owner-occupied share | 74% |
| Share of owner-occupied homes with a mortgage | 67% |
| Top hazards (FEMA National Risk Index) | Tornado (Relatively Moderate), Inland Flooding (Relatively Low), Strong Wind (Relatively Moderate) |
| Active NFIP flood policies (county) | 167 |
| Home insurance premium | $1,480 - statewide average (NAIC, 2023 data) |
Towns and cities
Smaller communities
-
Diamond
- Median home value: $220,200
- Median year built: 1991
- Owner-occupied share: 80%
-
Gardner
- Median home value: $199,600
- Median year built: 1964
- Owner-occupied share: 75%
-
Morris
- Median home value: $247,400
- Median year built: 1983
- Owner-occupied share: 57%
-
Verona
- Median home value: $118,800
- Median year built: 1953
- Owner-occupied share: 86%
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)