Home Insurance in Nantucket County, Massachusetts
The median home value in Nantucket County is $1,593,800, 184% higher than the Massachusetts median.
The typical home in Nantucket County was built around 1984. About 26% of homes were built before 1960, about 20 points below Massachusetts's 46%. Older homes can cost more to insure or rebuild because of aging wiring, roofing and plumbing.
In Nantucket County, the housing stock is 87% single-family homes and 2% apartments in buildings with 5+ units. The rest are 2-4 unit or other housing types.
67% of owner-occupied homes in Nantucket County carry a mortgage, and mortgage lenders require hazard insurance for as long as the loan is active.
About 72% of occupied homes in Nantucket County are owner-occupied. The vacancy rate is 58%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy.
Homes heated with propane and fuel oil can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies. In Nantucket County, 32% of homes are primarily heated with electricity.
The top hazards for Nantucket County, per FEMA's National Risk Index, are hurricane (Relatively Moderate), coastal flooding (Relatively Moderate) and earthquake (Very Low). Standard homeowners policies exclude earthquake, so separate coverage is usually needed.
As of September 2026, Nantucket County has 834 active NFIP flood insurance policies. 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 Massachusetts is $2,134 per year, according to the NAIC homeowners insurance report (2023 data).
Key figures
| Median home value | $1,593,800 |
|---|---|
| Median year built | 1984 |
| Owner-occupied share | 72% |
| Share of owner-occupied homes with a mortgage | 67% |
| Top hazards (FEMA National Risk Index) | Hurricane (Relatively Moderate), Coastal Flooding (Relatively Moderate), Earthquake (Very Low) |
| Active NFIP flood policies (county) | 834 |
| Home insurance premium | $2,134 - statewide average (NAIC, 2023 data) |
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)