Home Insurance in Sweet Grass County, Montana
The median home value in Sweet Grass County is $330,100, 12% lower than the Montana median.
The typical home in Sweet Grass County was built around 1979. About 33% of homes were built before 1960, about 7 points above Montana's 26%. Because older housing stock often has aging wiring, roofing or plumbing, it can cost more to insure or rebuild.
The housing stock in Sweet Grass County is 84% single-family homes, 1% apartments in buildings with 5+ units and 9% mobile or manufactured homes. Mobile and manufactured homes typically need a manufactured-home (HO-7) policy rather than a standard homeowners policy.
47% of owner-occupied homes in Sweet Grass County carry a mortgage, and mortgage lenders require hazard insurance for as long as the loan is active.
Sweet Grass County has an owner-occupancy rate of 80% and a vacancy rate of 18%; unoccupied homes typically need a different coverage form.
Homes heated with propane and wood can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies. 47% of homes in Sweet Grass County are primarily heated with natural gas.
The top hazards for Sweet Grass County, per FEMA's National Risk Index, are wildfire (Relatively Low), earthquake (Very Low) and winter weather (Relatively Low). Standard homeowners policies exclude earthquake, so separate coverage is usually needed.
Sweet Grass County had 18 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 Montana is $1,768 per year, according to the NAIC homeowners insurance report (2023 data).
Key figures
| Median home value | $330,100 |
|---|---|
| Median year built | 1979 |
| Owner-occupied share | 80% |
| Share of owner-occupied homes with a mortgage | 47% |
| Top hazards (FEMA National Risk Index) | Wildfire (Relatively Low), Earthquake (Very Low), Winter Weather (Relatively Low) |
| Active NFIP flood policies (county) | 18 |
| Home insurance premium | $1,768 - statewide average (NAIC, 2023 data) |
Towns and cities
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)