County Hazards

States › California › Sonoma County › ZIP 94931

ZIP code 94931, Sonoma County, California

National Flood Insurance Program claims and payouts recorded for this ZIP code, with county context.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. NFIP claims as of 8 Sep 2026.

OpenFEMA lists 6 NFIP claims for ZIP 94931 (Sonoma County, California), with $10K paid on 3 claims since 1978.

That is 0.1% of the 7,403 claims recorded across Sonoma County. The average paid claim in the ZIP is $3K, lower than the county average of $21K and the California average of $21K.

At county level FEMA counts 1,790 residential flood policies in force, covering 1.1% of residential structures.

6NFIP claims since 1978
3paid claims
$10Ktotal paid
$3Kaverage paid claim

Compared with the county and state

MeasureZIP 94931SonomaCaliforniaUS
Claims since 197867,40353,5632,680,429
Share of claims paid50%84%66%78%
Average paid claim$3K$21K$21K$43K
Share of county claims0.1%100%——
Repetitive-loss properties08753,456—

Claims by year of loss

197820022026
NFIP claims in ZIP 94931 by year of loss, 1978 to 2026.
DecadeClaimsPaid
1970s0$0
1980s1$8,003
1990s3$2,275
2000s1$0
2010s1$0
2020s0$0
Year of lossClaimsPaid claimsAmount paidAverage paid
201210$0—
200610$0—
199521$906$906
199311$1,369$1,369
198611$8,003$8,003

Claims are counted by year of loss as recorded in OpenFEMA's redacted NFIP claims file; amounts combine building, contents and increased-cost-of-compliance payments. ZIP codes in the file are the policyholder's reported ZIP.

County context: Sonoma County

Sonoma County has 423 weather events in the NCEI record since 1950 (16 in the last 12 months), 36 federal disaster declarations, and an overall National Risk Index rating of "Relatively High". Flood-type events recorded in the county: 300; hurricane-strength tracks within 50 miles: 0.

Hail: 21 · Tornado: 13 · Flood: 300 · Wind: 1 · Winter: 0 — full county page.

Questions and answers

How many flood insurance claims have been filed in ZIP 94931?

6 claims since 1978 in the OpenFEMA NFIP claims file, 3 of them with a payment.

How much has the NFIP paid out in ZIP 94931?

$10K across 3 paid claims (building, contents and increased-cost-of-compliance payments combined), about $3K per paid claim.

Which year had the most flood claims in 94931?

1995, with 2 claims and $906 paid.

What county is ZIP 94931 in?

Most claims in this ZIP carry the county code for Sonoma County, California; ZIP codes can cross county lines. The county page carries the storm record, declarations and risk index for the area.

Provenance

OpenFEMA NfipClaims v3 (as of 8 Sep 2026) and NfipMultipleLossProperties v1 (2 Aug 2026), aggregated by ZIP code and year of loss on this site; no property-level record is shown. County storm figures from NOAA NCEI through 30 Jun 2026. Built 30 Sep 2026. See the guide to redacted NFIP claims and the methodology.