Which county in Washington has the lowest flood risk?

Spokane has the lowest flood risk in Washington, at 31.1.

What is the flood risk in Spokane?

Spokane is ranked #1 in Washington for flood risk, at 31.1.

What are the top counties in Washington for flood risk?

Spokane (31.1), then Clark (41.9), and Pierce (45.9). The full top 25 is in the table on this page.

How is this flood risk ranking calculated?

Counties in Washington are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.

How does Washington compare to the rest of the US for flood risk?

This list is Washington only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.

Lowest Flood Risk Counties in Washington (2026)

Lowest counties for flood risk in Washington

Top 25 of 39 counties with data.

Ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first.

Lowest counties for flood risk in Washington

Rank	County	Value
01	Spokane31.1 County page
02	Clark41.9 County page
03	Pierce45.9 County page
04	Snohomish46.2 County page
05	King49.6 County page
06	Adams50.6 County page
07	Grant53.2 County page
08	Whitman53.9 County page
09	Asotin55.0 County page
10	Walla Walla56.8 County page
11	Yakima60.9 County page
12	Stevens62.8 County page
13	Thurston63.0 County page
14	Benton65.5 County page
15	Clallam66.5 County page
16	Whatcom68.6 County page
17	Cowlitz71.4 County page
18	Kittitas71.7 County page
19	Skagit73.2 County page
20	Pend Oreille74.7 County page
21	Kitsap74.8 County page
22	Franklin78.0 County page
23	Island82.6 County page
24	Lincoln84.1 County page
25	Skamania84.4 County page

How this ranking works

This page ranks Washington counties by flood risk, sorted so the lowest places appear first. Click any county to see its housing, schools, crime, and demographics in detail.

For flood risk, a lower value is generally more favorable, so the top of the list is the lowest. Want to weigh flood risk against schools, taxes, commute, and more at once? Use the live map to build a custom match.

Data comes from public sources. Source attribution and the exact data vintage are shown above and on the full map of flood risk.

Frequently asked questions

Which county in Washington has the lowest flood risk?: Spokane has the lowest flood risk in Washington, at 31.1.
What is the flood risk in Spokane?: Spokane is ranked #1 in Washington for flood risk, at 31.1.
What are the top counties in Washington for flood risk?: Spokane (31.1), then Clark (41.9), and Pierce (45.9). The full top 25 is in the table on this page.
How is this flood risk ranking calculated?: Counties in Washington are ranked by flood risk (FEMA National Risk Index, FEMA NRI v1.20), lowest first. Values describe the county, not an individual property. Source vintage is shown on the page.
How does Washington compare to the rest of the US for flood risk?: This list is Washington only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.