FEMA flood zones · statewide

Washington Flood Zone Map

15,997 flood insurance claims·$347.6M paid·29,034 policies in force

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Washington. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

Flood Risk in Washington

Washington experiences a mixed flood-risk profile dominated by riverine floods, accompanied by frequent flash floods, coastal floods, and storm surges. Over the last 30 years, NOAA records show 471 flood events and 9 deaths, alongside 201 flash floods resulting in 2 deaths, 31 coastal flood events, and 11 storm surge or tide events.

Recent federal disaster declarations highlight the state's vulnerability to compounding hazards, specifically recording multiple concurrent declarations on December 9, 2025, for severe storms, straight-line winds, flooding, landslides, and mudslides. These events reflect the severe multi-hazard threats facing communities across the state, where heavy precipitation triggers both inundation and slope failures.

The National Flood Insurance Program claim history demonstrates that while high-risk coastal and riverine areas account for the greatest financial impact, significant risk extends well beyond designated zones. FEMA Zone A holds the highest burden with 11,274 claims totaling $276 million paid, and Zone V records the highest average payout at $43,181 across 126 claims. However, properties outside primary high-risk zones also experience substantial losses. Zone X categories—including shaded, unshaded, and general designations—account for thousands of claims and tens of millions of dollars paid, with average payouts exceeding $24,000 to $31,000. Additionally, 1,007 claims were recorded in unknown zones, totaling $8 million paid. This distribution indicates that while residents in A and V zones face the most urgent insurance needs, property owners in lower-risk or unshaded zones still face surprise claims and substantial financial risk.

Summary generated from FEMA disaster declarations, NOAA storm events, and NFIP claim data. Updated quarterly.

Washington Flood Statistics

Total NFIP Claims
15,997
Total Claims Paid
$347.6M
Average Claim
$21,730
NFIP Policies in Force (Aug 31, 2026)
29,034
Average NFIP Premium (Aug 31, 2026)
$1,060/yr
Disaster Declarations
1,034
Peak Claims Year
1996 (1,917 claims)
Latest Disaster
SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES (2025-12-09)

Source: OpenFEMA NFIP Claims, Policies, and Disaster Declarations data. NFIP policies in force and average premium (premium plus federal policy fee) as of August 31, 2026, from OpenFEMA.

Washington Disaster History

Washington has received 1,034 federal disaster declarations, including 347 flood and coastal storm declarations.

Where Washington’s flood claims are

  1. King County3,384
  2. Lewis County2,102
  3. Snohomish County1,961
  4. Skagit County1,294
  5. Whatcom County1,211
  6. Pierce County1,106
  7. Grays Harbor County921
  8. Cowlitz County684
  9. Thurston County387
  10. Yakima County320

NFIP claims by county, 1978 to date. Source: OpenFEMA. Counties ranked by recorded flood events →

The zones you’ll see on the map

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood Insurance in Washington

Properties in Washington FEMA-designated Special Flood Hazard Areas (zones A and V) with a mortgage from a federally regulated or insured lender, or a federally backed loan, are required to carry flood insurance through the National Flood Insurance Program (NFIP).

Washington had 29,034 NFIP policies in force on August 31, 2026, and the average NFIP premium was $1,060 a year (premium plus the federal policy fee; the reserve fund assessment and HFIAA surcharge come on top, and nationally they make actual bills about a quarter higher). Under FEMA’s Risk Rating 2.0 each building is priced on its own flood risk, so a state average says little about what any one home will pay.

Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from properties outside the high-risk Special Flood Hazard Area. Washington residents can purchase flood insurance through the NFIP or private insurers.

Visit FloodSmart.gov to find an agent and get a quote.

See the most flood-prone counties in Washington →

Washington Counties (39)

Select a county to view local flood zone data and disaster history:

Washington Cities (194)

Select a city to check flood zone information:

AberdeenAirway HeightsAlderwood Manor CDPAnacortesArlingtonArtondale CDPAuburnBainbridge IslandBangor Base CDPBarberton CDPBattle GroundBellevueBellinghamBirch Bay CDPBlaineBonney Lake