countyscore

Best Disaster Risk Counties in California

FEMA National Risk Index — flood, fire, tornado, and more Compare rankings across all 58 counties.

Average Disaster Risk Score
11/100
Top County
Alpine County
Counties Ranked
58

Top 10

#1
Alpine County
CA
90/100
#2
Sierra County
CA
69/100
#3
Modoc County
CA
60/100
#4
Mono County
CA
54/100
#5
Lassen County
CA
27/100
#6
Glenn County
CA
26/100
#7
Amador County
CA
21/100
#8
Inyo County
CA
21/100
#9
Trinity County
CA
21/100
#10
Yuba County
CA
19/100

All California Counties Ranked

#CountyDisaster Risk ScoreOverall Score
1Alpine County, CA
89.5
51.2
2Sierra County, CA
68.5
52.4
3Modoc County, CA
60.3
49.7
4Mono County, CA
53.5
38.5
5Lassen County, CA
26.9
40.4
6Glenn County, CA
25.6
41.8
7Amador County, CA
20.8
41.8
8Inyo County, CA
20.7
41.1
9Trinity County, CA
20.6
48.3
10Yuba County, CA
19.1
37.7
11Colusa County, CA
18.9
41.8
12Sutter County, CA
16.3
35
13San Benito County, CA
14.8
43.3
14Tuolumne County, CA
14.8
41.7
15Mariposa County, CA
13.6
43.9
16Plumas County, CA
13.6
41
17Calaveras County, CA
13.4
43
18Tehama County, CA
11.1
36.7
19Siskiyou County, CA
11
37.9
20Nevada County, CA
10.1
45.2
21El Dorado County, CA
8.6
49.8
22Yolo County, CA
8.6
38
23Kings County, CA
7.6
38.2
24Lake County, CA
7
31.6
25Placer County, CA
6.9
46.5
26Shasta County, CA
6.6
52.3
27Butte County, CA
6.1
39.3
28Mendocino County, CA
5.7
44.1
29Del Norte County, CA
5.6
39.9
30Napa County, CA
4.7
43.6
31San Luis Obispo County, CA
4.1
42.9
32Madera County, CA
3.6
35.5
33Marin County, CA
3.6
47.4
34Imperial County, CA
3.5
33.7
35Humboldt County, CA
3.2
40
36Merced County, CA
3.1
35.3
37Stanislaus County, CA
3.1
35.6
38Solano County, CA
3
36.4
39Tulare County, CA
3
35.2
40Santa Cruz County, CA
2.2
41.6
41Sacramento County, CA
1.9
38.3
42San Joaquin County, CA
1.4
33.1
43Monterey County, CA
1.3
39
44Kern County, CA
1.1
27.8
45Santa Barbara County, CA
1
43
46Sonoma County, CA
0.9
44.8
47San Mateo County, CA
0.8
47.6
48Fresno County, CA
0.7
33
49Ventura County, CA
0.6
44.3
50Contra Costa County, CA
0.5
40.1
51San Francisco County, CA
0.5
43.6
52San Diego County, CA
0.3
42.3
53Santa Clara County, CA
0.3
42.2
54Alameda County, CA
0.2
40.6
55Orange County, CA
0.2
44.3
56San Bernardino County, CA
0.2
33.7
57Riverside County, CA
0.1
37.2
58Los Angeles County, CA
0
36.9

Data Source

Disaster Risk data from RiskByCounty. See full details at RiskByCounty. Data updated February 2026.