County health data
Health data for California counties
CDC PLACES estimates for 58 counties in California. Statewide, 11.5% of adults have diagnosed diabetes (CDC BRFSS). The highest county rate is Trinity County at 15.9%. HRSA lists a shortage area designation in 51 of 58.
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Counties in California
- Alameda Countydiabetes 11.0%, 1 shortage area, 11 hospitals
- Alpine Countydiabetes 11.6%, 1 shortage area
- Amador Countydiabetes 11.8%, 1 shortage area, 1 hospital
- Butte Countydiabetes 10.7%, 5 shortage areas, 3 hospitals
- Calaveras Countydiabetes 13.2%, 2 shortage areas, 1 hospital
- Colusa Countydiabetes 13.4%, 2 shortage areas, 1 hospital
- Contra Costa Countydiabetes 11.3%, 1 shortage area, 7 hospitals
- Del Norte Countydiabetes 12.5%, 3 shortage areas, 1 hospital
- El Dorado Countydiabetes 10.8%, 4 shortage areas, 2 hospitals
- Fresno Countydiabetes 12.7%, 14 shortage areas, 8 hospitals
- Glenn Countydiabetes 12.6%, 3 shortage areas, 1 hospital
- Humboldt Countydiabetes 11.4%, 6 shortage areas, 4 hospitals
- Imperial Countydiabetes 15.0%, 5 shortage areas, 2 hospitals
- Inyo Countydiabetes 12.4%, 2 shortage areas, 2 hospitals
- Kern Countydiabetes 13.3%, 22 shortage areas, 9 hospitals
- Kings Countydiabetes 12.1%, 5 shortage areas, 1 hospital
- Lake Countydiabetes 14.1%, 5 shortage areas, 2 hospitals
- Lassen Countydiabetes 11.5%, 2 shortage areas, 1 hospital
- Los Angeles Countydiabetes 12.6%, 21 shortage areas, 74 hospitals
- Madera Countydiabetes 13.5%, 2 shortage areas, 1 hospital
- Marin Countydiabetes 10.2%, 3 hospitals
- Mariposa Countydiabetes 13.5%, 2 shortage areas, 1 hospital
- Mendocino Countydiabetes 13.7%, 10 shortage areas, 3 hospitals
- Merced Countydiabetes 13.0%, 6 shortage areas, 2 hospitals
- Modoc Countydiabetes 14.9%, 4 shortage areas, 2 hospitals
- Mono Countydiabetes 10.5%, 1 shortage area, 1 hospital
- Monterey Countydiabetes 12.5%, 10 shortage areas, 4 hospitals
- Napa Countydiabetes 11.4%, 2 hospitals
- Nevada Countydiabetes 11.5%, 4 shortage areas, 2 hospitals
- Orange Countydiabetes 11.5%, 3 shortage areas, 23 hospitals
- Placer Countydiabetes 9.8%, 3 shortage areas, 3 hospitals
- Plumas Countydiabetes 13.5%, 5 shortage areas, 3 hospitals
- Riverside Countydiabetes 12.4%, 10 shortage areas, 16 hospitals
- Sacramento Countydiabetes 11.2%, 2 shortage areas, 9 hospitals
- San Benito Countydiabetes 11.3%, 2 shortage areas
- San Bernardino Countydiabetes 12.1%, 22 shortage areas, 21 hospitals
- San Diego Countydiabetes 10.0%, 13 shortage areas, 18 hospitals
- San Francisco Countydiabetes 10.2%, 11 hospitals
- San Joaquin Countydiabetes 12.3%, 4 shortage areas, 7 hospitals
- San Luis Obispo Countydiabetes 10.0%, 3 shortage areas, 3 hospitals
- San Mateo Countydiabetes 10.6%, 6 hospitals
- Santa Barbara Countydiabetes 10.8%, 3 shortage areas, 5 hospitals
- Santa Clara Countydiabetes 10.5%, 8 hospitals
- Santa Cruz Countydiabetes 10.2%, 1 shortage area, 3 hospitals
- Shasta Countydiabetes 11.7%, 11 shortage areas, 4 hospitals
- Sierra Countydiabetes 15.3%, 1 shortage area
- Siskiyou Countydiabetes 13.9%, 7 shortage areas, 2 hospitals
- Solano Countydiabetes 12.1%, 5 hospitals
- Sonoma Countydiabetes 10.7%, 6 hospitals
- Stanislaus Countydiabetes 11.9%, 3 shortage areas, 5 hospitals
- Sutter Countydiabetes 12.8%, 2 shortage areas, 1 hospital
- Tehama Countydiabetes 13.0%, 8 shortage areas, 1 hospital
- Trinity Countydiabetes 15.9%, 5 shortage areas, 1 hospital
- Tulare Countydiabetes 13.1%, 9 shortage areas, 4 hospitals
- Tuolumne Countydiabetes 12.1%, 2 shortage areas, 1 hospital
- Ventura Countydiabetes 11.4%, 3 shortage areas, 6 hospitals
- Yolo Countydiabetes 9.3%, 1 shortage area, 2 hospitals
- Yuba Countydiabetes 11.3%, 4 shortage areas, 1 hospital
Source: CDC PLACES county data, as of December 4, 2025. Publisher page
Source: CDC BRFSS prevalence data, as of September 15, 2026. Publisher page
Source: HRSA Health Professional Shortage Areas, as of October 14, 2026. Publisher page
California rural health plan
The California Rural Health Transformation Program will provide novel and innovative strategies to bring rural and frontier communities the resources and quality health care services that they need.
Initiatives, as the state's abstract names them (page 9):
- Rural Health Transformative Care Model
- Rural Health Workforce Development
- Rural Health Technology and Tools
CMS says the abstract budgets are illustrative and are not award amounts, so none are shown.
Source: CMS Rural Health Transformation Program state project abstracts, as of December 2025. Publisher page
For health centers, health departments, and nonprofits
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About this data
County rates are CDC PLACES model-based estimates of adults, built from the CDC BRFSS survey and Census population data. State and US figures are BRFSS survey results for the same year. They are not averages of counties, and small differences may not be meaningful.
Shortage rows are HRSA designations with status Designated. Scores run from 0 to 25 (0 to 26 for dental); a higher score means greater need. Hospitals are acute care and critical access hospitals CMS lists in the county, with 30-day rates of unplanned readmission. Health centers are active HRSA-funded and look-alike sites.
Rural health plan initiatives are copied as the state wrote them. Nothing here is medical advice.
Source: CDC PLACES county data, as of December 4, 2025. Publisher page
Source: CDC BRFSS prevalence data, as of September 15, 2026. Publisher page
Source: HRSA Health Professional Shortage Areas, as of October 14, 2026. Publisher page