Home Insurance in Cowlitz County, Washington
With a median home value of $397,500, Cowlitz County is 30% lower than the Washington median.
The typical home in Cowlitz County was built around 1976. About 30% of homes were built before 1960, about 10 points above Washington's 20%. Older homes can cost more to insure or rebuild because of aging wiring, roofing and plumbing.
In Cowlitz County, the housing stock is 72% single-family homes, 14% 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.
About 65% of owner-occupied homes in Cowlitz County have a mortgage. Lenders require hazard (homeowners) insurance on any home carrying a mortgage.
The vacancy rate is 5%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy. About 68% of occupied homes in Cowlitz County are owner-occupied.
86% of homes in Cowlitz County are primarily heated with electricity. Homes heated with wood can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies.
FEMA's National Risk Index lists earthquake (Relatively Moderate), inland flooding (Relatively Moderate) and wildfire (Very Low) as the leading hazards for Cowlitz County. Standard homeowners policies exclude earthquake, so separate coverage is usually needed.
As of September 2026, Cowlitz County has 926 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 Washington is $1,232 per year, according to the NAIC homeowners insurance report (2023 data).
Key figures
| Median home value | $397,500 |
|---|---|
| Median year built | 1976 |
| Owner-occupied share | 68% |
| Share of owner-occupied homes with a mortgage | 65% |
| Top hazards (FEMA National Risk Index) | Earthquake (Relatively Moderate), Inland Flooding (Relatively Moderate), Wildfire (Very Low) |
| Active NFIP flood policies (county) | 926 |
| Home insurance premium | $1,232 - statewide average (NAIC, 2023 data) |
Towns and cities
Smaller communities
-
Castle Rock
- Median home value: $348,600
- Median year built: 1970
- Owner-occupied share: 67%
-
Kalama
- Median home value: $471,500
- Median year built: 2002
- Owner-occupied share: 65%
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)