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Home insurance & natural hazards in Napa County, CA

Calm, plain facts for homeowners in Napa County: what neighbors have paid for coverage, what flood insurance costs, and which weather hazards matter most here.

  • Typical premiums from U.S. Treasury insurance data
  • Flood insurance costs from 773 FEMA NFIP policies
  • 15 natural hazards rated by the FEMA National Risk Index
See the numbers

Historical averages, not a quote. Updated Oct 2026.

Illustration of a house on a hill in front of a large shield

Napa at a glance

Four numbers most homeowners ask about first.

$2,132
Typical home premium

Per policy per year in 2022, median of 7 ZIP codes (inflation-adjusted).

$2,071
Avg. flood policy

Average full cost of a single-family NFIP policy that took effect in 2025.

1.86%
Nonrenewal rate

Share of policies insurers chose not to renew in 2022, median ZIP. Typical U.S. ZIP: 0.81%.

Rel. high
FEMA risk rating

Overall National Risk Index rating, higher than 95.3% of U.S. counties.

Napa County in numbers
137,956
residents (2020 Census)
2.5%
of policies had a paid claim (2022, median ZIP)
$77,072
average paid claim (2022, median ZIP)
773
single-family NFIP flood policies (2025)

What homeowners here pay

Each block pairs a short explanation with the data behind it.

Homeowners insurance

U.S. Treasury FIO, HO-3/HO-5 policies, 2018–2022

Typical premiums in Napa County were $2,132 per policy in 2022, 32% above the typical California ZIP code ($1,617) and 37% above the typical U.S. ZIP code ($1,551). After adjusting for inflation, local premiums rose 35% between 2018 and 2022.

Premiums by ZIP

Typical premium per policy

Inflation-adjusted dollars, median across ZIP codes
NapaCaliforniaU.S. typical ZIP

Flood insurance

FEMA NFIP single-family policies, 2022–2025

Standard home policies don't cover floods. The average single-family NFIP policy that took effect here in 2025 cost $2,071, compared with $1,646 in 2022. About 79% of local policies are for homes in high-risk A or V zones and 21% in moderate- to lower-risk zones.

Flood costs by ZIP

Average flood policy cost

Full cost incl. fees, by year the policy took effect

Policies by flood zone, 2025

773 policies
A zones 79%X/B/C zones 21%V zones 0%

Natural hazards

FEMA National Risk Index, December 2025

Bars show how Napa compares with every U.S. county for each hazard (100 = highest). Drought, landslide and earthquake rank highest here. A high rank doesn't mean an event is likely in any given year. It shows where preparation and the right coverage matter most.

How the ratings work

Hazard risk, national percentile

Higher than X% of U.S. counties

Compare nearby

Neighboring counties

Typical premium 2022 (Treasury FIO), nonrenewal 2022, avg. flood policy 2025 (NFIP)
CountyPremiumNonrenewalFlood
Lake County$2,1692.85%$1,936
Napa County$2,1321.86%$2,071
Sonoma County$2,0381.37%$2,043
Solano County$1,3640.71%$1,458
Yolo County$1,2430.61%$1,117

Flood insurance by ZIP, 2025

FEMA NFIP, single-family homes, ZIPs with the most policies
ZIPPoliciesAvg. cost
94558 Napa368$2,083
94559 Napa209$2,068
94574 Saint Helena88$2,024
94599 Yountville32$2,032
94503 American Canyon10$1,159

ZIP code pages in Napa County

94503 American Canyon94558 Napa94559 Napa94574 Saint Helena

Practical next steps

Simple things Napa homeowners can do with this information.

Check your flood zone. Look up your address on FEMA's Flood Map Service Center (msc.fema.gov). Standard home policies don't cover flood damage, and flood insurance usually has a 30-day waiting period, so it's worth sorting out before storm season.
Know that earthquake damage is separate. Standard homeowners policies exclude earthquakes. If shaking is a concern where you live, ask about a separate earthquake policy or endorsement and its deductible.
Plan for heat and dry spells. Long dry periods can stress foundations and landscaping. Regular checks of your HVAC system and foundation can catch small problems before they become claims.
Create defensible space. Clearing dry brush and debris within 30 feet of the house and using ember-resistant vents can lower wildfire exposure. Some insurers and states recognize mitigation work with discounts.

Historical averages, not a quote. Homeowners figures are inflation-adjusted averages from the U.S. Treasury Federal Insurance Office "Supporting Underlying Metrics" (2018–2022, published January 2025). They cover HO-3/HO-5 policies from participating private insurers and exclude state residual-market plans (such as FAIR plans and Citizens), surplus-lines and flood coverage. Treasury notes that individual ZIP codes can contain data anomalies. Your price depends on your home, coverage and insurer.

Sources: U.S. Treasury FIO; FEMA OpenFEMA NFIP Redacted Policies v3 (data as of Sep 8, 2026); FEMA National Risk Index (December 2025); U.S. Census Bureau ZCTA-to-county relationship file (2020) and county adjacency file; GeoNames place names. How we calculate these numbers.

This product uses the FEMA OpenFEMA API and National Risk Index data, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). SafeHomeFacts is independent and not affiliated with the U.S. Treasury, FEMA or any insurer.