#	County	Health Score	Overall Score
1	Marin County, CA	97.6	47.4
2	San Francisco County, CA	97.5	43.6
3	San Mateo County, CA	96.6	47.6
4	Placer County, CA	96	46.5
5	Santa Clara County, CA	94.1	42.2
6	El Dorado County, CA	94	49.8
7	Alameda County, CA	92.5	40.6
8	Contra Costa County, CA	89.4	40.1
9	Sonoma County, CA	86.9	44.8
10	San Luis Obispo County, CA	83.1	42.9
11	Santa Cruz County, CA	82.5	41.6
12	Alpine County, CA	82.4	51.2
13	Amador County, CA	81.2	41.8
14	Plumas County, CA	81.1	41
15	Sierra County, CA	80.7	52.4
16	Nevada County, CA	80.6	45.2
17	Orange County, CA	79.9	44.3
18	San Diego County, CA	78.7	42.3
19	Solano County, CA	78.4	36.4
20	Tuolumne County, CA	76.3	41.7
21	Yolo County, CA	76.1	38
22	San Benito County, CA	74.5	43.3
23	Calaveras County, CA	74.3	43
24	Napa County, CA	73.3	43.6
25	Sacramento County, CA	73.3	38.3
26	Mono County, CA	71.8	38.5
27	Santa Barbara County, CA	71.7	43
28	Ventura County, CA	71.2	44.3
29	Inyo County, CA	67.9	41.1
30	Mariposa County, CA	67.1	43.9
31	Trinity County, CA	67	48.3
32	Riverside County, CA	64	37.2
33	Los Angeles County, CA	63.1	36.9
34	Shasta County, CA	60.6	52.3
35	Butte County, CA	59.2	39.3
36	Humboldt County, CA	58.2	40
37	Stanislaus County, CA	56.5	35.6
38	San Joaquin County, CA	56.3	33.1
39	Lassen County, CA	55	40.4
40	Yuba County, CA	53.5	37.7
41	Modoc County, CA	52.8	49.7
42	Mendocino County, CA	52	44.1
43	Colusa County, CA	51.3	41.8
44	Lake County, CA	51.3	31.6
45	Monterey County, CA	51.3	39
46	Sutter County, CA	50.5	35
47	Tehama County, CA	49	36.7
48	Kings County, CA	48.4	38.2
49	Fresno County, CA	46.6	33
50	Siskiyou County, CA	46.4	37.9
51	San Bernardino County, CA	45.8	33.7
52	Madera County, CA	42.5	35.5
53	Glenn County, CA	41.7	41.8
54	Imperial County, CA	40.3	33.7
55	Merced County, CA	39.9	35.3
56	Kern County, CA	38.6	27.8
57	Tulare County, CA	37.8	35.2
58	Del Norte County, CA	37.5	39.9

Data Source

Health data from HealthByCounty. See full details at HealthByCounty. Data updated February 2026.