# Counties in California by uninsured rate, all ages (US), 2024

All 58 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `uninsured_rate`
- Unit: %
- Definition: People without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat)
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/uninsured-rate/california-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Sierra County | 13.7 |
| 2 | Modoc County | 10 |
| 3 | Monterey County | 9.6 |
| 4 | Trinity County | 9.3 |
| 5 | Mono County | 8.8 |
| 6 | Santa Barbara County | 8.7 |
| 7 | Glenn County | 8.5 |
| 8 | Los Angeles County | 8.2 |
| 9 | Merced County | 8.1 |
| 10 | Tulare County | 8.1 |
| 11 | Colusa County | 8 |
| 12 | San Bernardino County | 8 |
| 13 | Kern County | 7.8 |
| 14 | Riverside County | 7.7 |
| 15 | Mendocino County | 7.7 |
| 16 | Madera County | 7.4 |
| 17 | Kings County | 7.3 |
| 18 | Ventura County | 7.3 |
| 19 | Inyo County | 7 |
| 20 | Lake County | 6.9 |
| 21 | Fresno County | 6.7 |
| 22 | Tehama County | 6.6 |
| 23 | Shasta County | 6.5 |
| 24 | Yuba County | 6.5 |
| 25 | Orange County | 6.4 |
| 26 | Butte County | 6.4 |
| 26 | San Diego County | 6.4 |
| 28 | Lassen County | 6.4 |
| 28 | Sutter County | 6.4 |
| 30 | San Joaquin County | 6.3 |
| 31 | Imperial County | 6 |
| 32 | Siskiyou County | 6 |
| 33 | San Benito County | 6 |
| 34 | Plumas County | 5.8 |
| 35 | Napa County | 5.7 |
| 36 | San Luis Obispo County | 5.7 |
| 37 | Stanislaus County | 5.6 |
| 38 | Del Norte County | 5.5 |
| 39 | Tuolumne County | 5.3 |
| 40 | Nevada County | 5.3 |
| 41 | Mariposa County | 5.2 |
| 42 | Sonoma County | 5.1 |
| 43 | Calaveras County | 5 |
| 44 | Amador County | 4.9 |
| 44 | Santa Cruz County | 4.9 |
| 46 | Sacramento County | 4.9 |
| 47 | Humboldt County | 4.9 |
| 48 | Yolo County | 4.8 |
| 49 | Solano County | 4.8 |
| 50 | Contra Costa County | 4.6 |
| 51 | Alameda County | 4 |
| 52 | El Dorado County | 3.9 |
| 52 | Santa Clara County | 3.9 |
| 54 | San Mateo County | 3.8 |
| 55 | Marin County | 3.8 |
| 56 | Alpine County | 3.7 |
| 57 | San Francisco County | 3.3 |
| 58 | Placer County | 3.2 |