Which county in California has the lowest flood risk?

Sacramento has the lowest flood risk in California, at 46.8.

What is the flood risk in Sacramento?

Sacramento is ranked #1 in California for flood risk, at 46.8.

What are the top counties in California for flood risk?

Sacramento (46.8), then Kern (47.2), and San Francisco (53.7). The full top 25 is in the table on this page.

How is this flood risk ranking calculated?

Counties in California 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 California compare to the rest of the US for flood risk?

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

Lowest Flood Risk Counties in California (2026)

Lowest counties for flood risk in California

Top 25 of 58 counties with data.

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

Lowest counties for flood risk in California

Rank	County	Value
01	Sacramento46.8 County page
02	Kern47.2 County page
03	San Francisco53.7 County page
04	San Joaquin54.0 County page
05	Sutter56.6 County page
06	Kings56.7 County page
07	Yolo58.7 County page
08	Stanislaus60.2 County page
09	San Diego61.4 County page
10	Fresno62.4 County page
11	Glenn63.2 County page
12	Colusa63.7 County page
13	Merced66.4 County page
14	Butte67.3 County page
15	Los Angeles69.3 County page
16	Placer69.7 County page
17	San Mateo69.9 County page
18	Monterey70.0 County page
19	San Benito70.8 County page
20	El Dorado71.5 County page
21	Alameda71.6 County page
22	Orange73.4 County page
23	Tuolumne77.3 County page
24	Santa Cruz77.5 County page
25	Amador78.3 County page

How this ranking works

This page ranks California 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 California has the lowest flood risk?: Sacramento has the lowest flood risk in California, at 46.8.
What is the flood risk in Sacramento?: Sacramento is ranked #1 in California for flood risk, at 46.8.
What are the top counties in California for flood risk?: Sacramento (46.8), then Kern (47.2), and San Francisco (53.7). The full top 25 is in the table on this page.
How is this flood risk ranking calculated?: Counties in California 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 California compare to the rest of the US for flood risk?: This list is California only. See the national ranking of the lowest counties for flood risk at hearthmap.app/best/lowest-flood-risk.