US Counties With the Highest Earthquake Risk

These counties face the highest earthquake risk in the US per FEMA's National Risk Index, sitting on or near active fault systems capable of damaging ground shaking. Standard homeowners insurance excludes earthquake damage. Click any county for details.

#	County	State	Earthquake risk	Overall
1	Los Angeles County	California	10.0	7.6
2	San Diego County	California	10.0	7.4
3	Orange County	California	10.0	6.7
4	Riverside County	California	10.0	7.1
5	King County	Washington	10.0	7.2
6	San Bernardino County	California	10.0	7.2
7	Santa Clara County	California	10.0	6.6
8	Alameda County	California	10.0	6.6
9	Salt Lake County	Utah	10.0	7.3
10	Contra Costa County	California	10.0	6.9
11	Shelby County	Tennessee	10.0	7.5
12	Pierce County	Washington	10.0	7.6
13	San Francisco County	California	10.0	5.5
14	Ventura County	California	10.0	6.5
15	Multnomah County	Oregon	10.0	7.1
16	San Mateo County	California	10.0	5.9
17	Sonoma County	California	10.0	6.3
18	Anchorage County	Alaska	10.0	5.8
19	Cook County	Illinois	9.9	8.0
20	Kings County	New York	9.9	7.9
21	Clark County	Nevada	9.9	6.5
22	Sacramento County	California	9.9	5.9
23	Honolulu County	Hawaii	9.9	5.8
24	Fresno County	California	9.9	6.7
25	St. Louis County	Missouri	9.9	7.9
26	Kern County	California	9.9	6.8
27	Snohomish County	Washington	9.9	7.3
28	San Joaquin County	California	9.9	6.4
29	Utah County	Utah	9.9	7.4
30	Washington County	Oregon	9.9	7.1
31	Stanislaus County	California	9.9	6.4
32	Washoe County	Nevada	9.9	7.0
33	Solano County	California	9.9	6.3
34	Santa Barbara County	California	9.9	5.9
35	Monterey County	California	9.9	6.2
36	Clackamas County	Oregon	9.9	7.7
37	Charleston County	South Carolina	9.9	7.7
38	Lane County	Oregon	9.9	7.3
39	Marion County	Oregon	9.9	6.9
40	Thurston County	Washington	9.9	6.2
41	Merced County	California	9.9	6.1
42	Kitsap County	Washington	9.9	6.0
43	Santa Cruz County	California	9.9	6.2
44	Marin County	California	9.9	5.6
45	Yuma County	Arizona	9.9	5.2
46	Hawaii County	Hawaii	9.9	5.6
47	Imperial County	California	9.9	5.1
48	Napa County	California	9.9	5.9
49	Humboldt County	California	9.9	5.5
50	Matanuska-Susitna County	Alaska	9.9	5.8

Source: FEMA National Risk Index. Scores normalized 1–10. City scores inherit county-level FEMA data. For informational purposes only.

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