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RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Medicaid coverage, California counties

California counties ranked by the share of people covered by Medicaid or other means-tested public insurance, alone or in combination with other coverage (2024 ACS). This list covers the 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCitiesStatesMetrosZIP codes
RELATEDLargest foreign-born populationMost residents with a disabilityLargest veteran populationMost uninsured peopleLargest senior populationMost unmarried people
YEAR20202024
Highest Medicaid coverage by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPMEDICAIDVS 2020
01Imperial County, CACA181,41149.8%+2.9 pts
02Tulare County, CACA485,14645.7%+3.6 pts
03Merced County, CACA297,26042.5%−0.3 pts
04Lake County, CACA67,77240.8%+0.1 pts
05Kern County, CACA927,06840.4%+1.1 pts
06Tehama County, CACA64,66540.3%+4.4 pts
07Trinity County, CACA15,72039.7%+7.4 pts
08Madera County, CACA167,92739.4%−1.6 pts
09Fresno County, CACA1,035,45639.3%+0.4 pts
10Colusa County, CACA21,83638.2%+3.7 pts
11Humboldt County, CACA131,64738.2%+5.6 pts
12Glenn County, CACA28,14137.7%+3.2 pts
13Kings County, CACA154,32737.6%+4.2 pts
14Del Norte County, CACA26,41037.5%−1.9 pts
15Yuba County, CACA88,69136.0%+2.4 pts
16Sutter County, CACA98,78734.7%+1.0 pts
17Mendocino County, CACA88,12234.2%−1.5 pts
18Stanislaus County, CACA557,71933.9%−0.1 pts
19Monterey County, CACA433,72933.5%+3.1 pts
20San Bernardino County, CACA2,224,09133.1%+0.7 pts
21Butte County, CACA209,21131.8%+1.0 pts
22San Joaquin County, CACA823,81531.4%−1.0 pts
23Siskiyou County, CACA42,01330.3%−2.0 pts
24Los Angeles County, CACA9,694,93430.1%+1.1 pts
25Riverside County, CACA2,544,91629.0%+0.6 pts
26Sacramento County, CACA1,618,46028.6%+0.4 pts
27Shasta County, CACA181,64828.2%+0.3 pts
28Modoc County, CACA8,42627.8%+1.2 pts
29Alpine County, CACA1,04327.7%+1.9 pts
30Lassen County, CACA28,11727.7%+3.4 pts
31Santa Barbara County, CACA442,06527.6%+3.1 pts
32Inyo County, CACA18,15827.1%+6.0 pts
33Plumas County, CACA18,58326.0%+0.8 pts
34Tuolumne County, CACA53,16025.2%+4.6 pts
35San Benito County, CACA70,08225.1%−0.7 pts
36Mariposa County, CACA16,91823.2%−2.7 pts
37Calaveras County, CACA46,60523.0%+0.7 pts
38Solano County, CACA455,37622.8%+1.6 pts
39Nevada County, CACA101,91122.3%+2.4 pts
40Orange County, CACA3,149,50722.2%+1.6 pts
41Ventura County, CACA830,85122.2%+1.5 pts
42Santa Cruz County, CACA258,85222.0%+1.1 pts
43Yolo County, CACA224,41021.3%−0.9 pts
44San Diego County, CACA3,282,24820.7%+0.5 pts
45Sonoma County, CACA486,44420.5%+2.0 pts
46Amador County, CACA41,87619.9%−1.5 pts
47Contra Costa County, CACA1,170,07019.9%+1.6 pts
48Napa County, CACA132,94919.8%+2.2 pts
49Alameda County, CACA1,636,63019.4%+0.2 pts
50Mono County, CACA12,50519.3%+4.9 pts
51San Francisco County, CACA826,07919.2%+1.2 pts
52San Luis Obispo County, CACA282,36717.6%+0.6 pts
53El Dorado County, CACA192,32316.5%−0.6 pts
54Santa Clara County, CACA1,914,39116.4%+0.1 pts
55San Mateo County, CACA743,56815.9%+1.6 pts
56Sierra County, CACA3,09815.7%−2.0 pts
57Placer County, CACA442,08115.4%+1.6 pts
58Marin County, CACA253,69414.9%+2.0 pts
SHOWING 1–58 OF 58
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES