FloodZoneMap.org

King County, Washington Flood Zones

Check an Address in King County

Enter any address in King County, Washington to see its FEMA flood zone

King County Disaster History

Disaster Declarations
34
Flood/Coastal Disasters
17
Latest Disaster
SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES (2025-12-09)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in King County

DeclarationTypeDate
SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDESFlood2025-12-09
SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDESSevere Storm2024-01-05
BOLT CREEK FIREFire2022-09-10
SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDESFlood2020-01-20
COVID-19Biological2020-01-20
COVID-19 PANDEMICBiological2020-01-20
SEVERE WINTER STORMS, FLOODING, LANDSLIDES, MUDSLIDESFlood2017-01-30
SEVERE WINTER STORM, FLOODING, LANDSLIDES, AND MUDSLIDESSevere Storm2012-01-14
SEVERE WINTER STORM, FLOODING, LANDSLIDES, AND MUDSLIDESSevere Storm2011-01-11
SEVERE WINTER STORM, LANDSLIDES, MUDSLIDES, AND FLOODINGFlood2009-01-06

Flood Zone Types in King County

FEMA assigns flood zone designations to areas in King County, Washington:

AE High Risk — 1% annual chance of flooding. Insurance required.

VE Very High Risk — Coastal flooding with wave action.

X (Shaded) Moderate Risk — 500-year floodplain.

X Low Risk — Outside major floodplains.

View all flood zone types →

Flood Insurance in King County

Properties in King County, Washington that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.

Even outside high-risk zones, flood insurance is recommended. Over 20% of NFIP claims come from low and moderate-risk areas.

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