Home Insurance in Keystone, South Dakota
Homes in Keystone carry a median value of $263,900 - 13% lower than the Pennington County median.
The typical home in Keystone was built around 1977. About 16% of homes were built before 1960, about 6 points below Pennington County's 22%. Because older housing stock often has aging wiring, roofing or plumbing, it can cost more to insure or rebuild.
In Keystone, the housing stock is 54% single-family homes, 3% apartments in buildings with 5+ units and 37% mobile or manufactured homes. Mobile and manufactured homes typically need a manufactured-home (HO-7) policy rather than a standard homeowners policy.
In Keystone, about 31% of owner-occupied homes have a mortgage - lenders require hazard insurance on every mortgaged home.
About 70% of occupied homes in Keystone are owner-occupied. The vacancy rate is 54%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy.
Homes heated with propane and wood can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies. 53% of homes in Keystone are primarily heated with propane.
Pennington County's top FEMA-rated hazard is wildfire (Relatively Moderate), per FEMA's National Risk Index. Pennington County had 322 active NFIP flood policies as of September 2026. See the full Pennington County home insurance overview for all FEMA hazard ratings and flood coverage details.
In South Dakota, the statewide average premium for a standard HO-3 homeowners policy is $1,614 per year (NAIC, 2023 data).
Key figures
| Median home value | $263,900 |
|---|---|
| Median year built | 1977 |
| Owner-occupied share | 70% |
| Share of owner-occupied homes with a mortgage | 31% |
| Top county hazard | Wildfire (Relatively Moderate) |
| Active NFIP policies in Pennington County | 322 |
| Home insurance premium | $1,614 - 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)