Counties in California by diagnosed diabetes in adults, local model estimate

Imperial County had the highest diagnosed diabetes in adults, local model estimate of 58 counties in 2022, at 15.4%. San Luis Obispo County had the lowest, at 9.6%. The median was 11.9%. Source: the Centers for Disease Control and Prevention.

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Highest15.4Imperial County
Median11.958 counties

Map of counties, 2022

Alameda County: 9.9 %Alpine County: 11.7 %Amador County: 12.4 %Butte County: 10.6 %Calaveras County: 13.4 %Colusa County: 12.9 %Contra Costa County: 11.2 %Del Norte County: 13.5 %El Dorado County: 10.3 %Fresno County: 13.1 %Glenn County: 12.6 %Humboldt County: 10.7 %Imperial County: 15.4 %Inyo County: 12 %Kern County: 12.8 %Kings County: 12.1 %Lake County: 12.6 %Lassen County: 11.2 %Los Angeles County: 12.3 %Madera County: 13.5 %Marin County: 9.8 %Mariposa County: 14.2 %Mendocino County: 12.6 %Merced County: 13.3 %Modoc County: 14.1 %Mono County: 10.3 %Monterey County: 11.9 %Napa County: 11.6 %Nevada County: 12.6 %Orange County: 11.1 %Placer County: 10.6 %Plumas County: 12.8 %Riverside County: 11.3 %Sacramento County: 11.4 %San Benito County: 10.9 %San Bernardino County: 12.5 %San Diego County: 9.9 %San Francisco County: 9.9 %San Joaquin County: 12.1 %San Luis Obispo County: 9.6 %San Mateo County: 10.3 %Santa Barbara County: 10.4 %Santa Clara County: 10.7 %Santa Cruz County: 10 %Shasta County: 11.7 %Sierra County: 13.6 %Siskiyou County: 13.4 %Solano County: 12.5 %Sonoma County: 10.3 %Stanislaus County: 11.3 %Sutter County: 12.9 %Tehama County: 12.2 %Trinity County: 14.6 %Tulare County: 13.1 %Tuolumne County: 11.9 %Ventura County: 11.5 %Yolo County: 9.7 %Yuba County: 11.2 %
  • Under 10
  • 10 to 11
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  • 13 and over
%, 2022. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Imperial County: 15.4 %Imperial County15.4Trinity County: 14.6 %Trinity County14.6Mariposa County: 14.2 %Mariposa County14.2Modoc County: 14.1 %Modoc County14.1Sierra County: 13.6 %Sierra County13.6Del Norte County: 13.5 %Del Norte County13.5Madera County: 13.5 %Madera County13.5Calaveras County: 13.4 %Calaveras County13.4Siskiyou County: 13.4 %Siskiyou County13.4Merced County: 13.3 %Merced County13.3Fresno County: 13.1 %Fresno County13.1Tulare County: 13.1 %Tulare County13.1Colusa County: 12.9 %Colusa County12.9Sutter County: 12.9 %Sutter County12.9Kern County: 12.8 %Kern County12.8Plumas County: 12.8 %Plumas County12.8Glenn County: 12.6 %Glenn County12.6Lake County: 12.6 %Lake County12.6Mendocino County: 12.6 %Mendocino County12.6Nevada County: 12.6 %Nevada County12.6San Bernardino County: 12.5 %San Bernardino County12.5Solano County: 12.5 %Solano County12.5Amador County: 12.4 %Amador County12.4Los Angeles County: 12.3 %Los Angeles County12.3Tehama County: 12.2 %Tehama County12.2Kings County: 12.1 %Kings County12.1San Joaquin County: 12.1 %San Joaquin County12.1Inyo County: 12 %Inyo County12Monterey County: 11.9 %Monterey County11.9Tuolumne County: 11.9 %Tuolumne County11.9Alpine County: 11.7 %Alpine County11.7Shasta County: 11.7 %Shasta County11.7Napa County: 11.6 %Napa County11.6Ventura County: 11.5 %Ventura County11.5Sacramento County: 11.4 %Sacramento County11.4Riverside County: 11.3 %Riverside County11.3Stanislaus County: 11.3 %Stanislaus County11.3Contra Costa County: 11.2 %Contra Costa County11.2Lassen County: 11.2 %Lassen County11.2Yuba County: 11.2 %Yuba County11.2Orange County: 11.1 %Orange County11.1San Benito County: 10.9 %San Benito County10.9Humboldt County: 10.7 %Humboldt County10.7Santa Clara County: 10.7 %Santa Clara County10.7Butte County: 10.6 %Butte County10.6Placer County: 10.6 %Placer County10.6Santa Barbara County: 10.4 %Santa Barbara County10.4El Dorado County: 10.3 %El Dorado County10.3Mono County: 10.3 %Mono County10.3San Mateo County: 10.3 %San Mateo County10.3Sonoma County: 10.3 %Sonoma County10.3Santa Cruz County: 10 %Santa Cruz County10Alameda County: 9.9 %Alameda County9.9San Diego County: 9.9 %San Diego County9.9San Francisco County: 9.9 %San Francisco County9.9Marin County: 9.8 %Marin County9.8Yolo County: 9.7 %Yolo County9.7San Luis Obispo County: 9.6 %San Luis Obispo County9.6Imperial County: 15.4 %Imperial County15.4Trinity County: 14.6 %Trinity County14.6Mariposa County: 14.2 %Mariposa County14.2Modoc County: 14.1 %Modoc County14.1Sierra County: 13.6 %Sierra County13.6Del Norte County: 13.5 %Del Norte County13.5Madera County: 13.5 %Madera County13.5Calaveras County: 13.4 %Calaveras County13.4Siskiyou County: 13.4 %Siskiyou County13.4Merced County: 13.3 %Merced County13.3Fresno County: 13.1 %Fresno County13.1Tulare County: 13.1 %Tulare County13.1Colusa County: 12.9 %Colusa County12.9Sutter County: 12.9 %Sutter County12.9Kern County: 12.8 %Kern County12.8Plumas County: 12.8 %Plumas County12.8Glenn County: 12.6 %Glenn County12.6Lake County: 12.6 %Lake County12.6Mendocino County: 12.6 %Mendocino County12.6Nevada County: 12.6 %Nevada County12.6San Bernardino County: 12.5 %San Bernardino County12.5Solano County: 12.5 %Solano County12.5Amador County: 12.4 %Amador County12.4Los Angeles County: 12.3 %Los Angeles County12.3Tehama County: 12.2 %Tehama County12.2Kings County: 12.1 %Kings County12.1San Joaquin County: 12.1 %San Joaquin County12.1Inyo County: 12 %Inyo County12Monterey County: 11.9 %Monterey County11.9Tuolumne County: 11.9 %Tuolumne County11.9Alpine County: 11.7 %Alpine County11.7Shasta County: 11.7 %Shasta County11.7Napa County: 11.6 %Napa County11.6Ventura County: 11.5 %Ventura County11.5Sacramento County: 11.4 %Sacramento County11.4Riverside County: 11.3 %Riverside County11.3Stanislaus County: 11.3 %Stanislaus County11.3Contra Costa County: 11.2 %Contra Costa County11.2Lassen County: 11.2 %Lassen County11.2Yuba County: 11.2 %Yuba County11.2Orange County: 11.1 %Orange County11.1San Benito County: 10.9 %San Benito County10.9Humboldt County: 10.7 %Humboldt County10.7Santa Clara County: 10.7 %Santa Clara County10.7Butte County: 10.6 %Butte County10.6Placer County: 10.6 %Placer County10.6Santa Barbara County: 10.4 %Santa Barbara County10.4El Dorado County: 10.3 %El Dorado County10.3Mono County: 10.3 %Mono County10.3San Mateo County: 10.3 %San Mateo County10.3Sonoma County: 10.3 %Sonoma County10.3Santa Cruz County: 10 %Santa Cruz County10Alameda County: 9.9 %Alameda County9.9San Diego County: 9.9 %San Diego County9.9San Francisco County: 9.9 %San Francisco County9.9Marin County: 9.8 %Marin County9.8Yolo County: 9.7 %Yolo County9.7San Luis Obispo County: 9.6 %San Luis Obispo County9.6
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Imperial County15.4+0.2 pts
2Trinity County14.6-1 pts
3Mariposa County14.2+1.4 pts
4Modoc County14.1-0.2 pts
5Sierra County13.6+0.8 pts
6Del Norte County13.5+0.6 pts
6Madera County13.5+0.2 pts
8Calaveras County13.40 pts
8Siskiyou County13.4-0.3 pts
10Merced County13.3+0.4 pts
11Fresno County13.1+0.4 pts
11Tulare County13.1-0.4 pts
13Colusa County12.9-0.2 pts
13Sutter County12.9+0.6 pts
15Kern County12.80 pts
15Plumas County12.8+0.1 pts
17Glenn County12.6-0.2 pts
17Lake County12.6-1.1 pts
17Mendocino County12.6-0.2 pts
17Nevada County12.6+1.5 pts
21San Bernardino County12.5+0.1 pts
21Solano County12.5+1 pts
23Amador County12.4+0.5 pts
24Los Angeles County12.3-0.2 pts
25Tehama County12.2-1 pts
26Kings County12.1+0.1 pts
26San Joaquin County12.1-0.2 pts
28Inyo County12+0.1 pts
29Monterey County11.9-0.1 pts
29Tuolumne County11.9+0.3 pts
31Alpine County11.7-0.1 pts
31Shasta County11.7+0.3 pts
33Napa County11.6+0.9 pts
34Ventura County11.5+0.6 pts
35Sacramento County11.40 pts
36Riverside County11.3-0.7 pts
36Stanislaus County11.3-0.8 pts
38Contra Costa County11.2+0.7 pts
38Lassen County11.2+0.4 pts
38Yuba County11.2+0.1 pts
41Orange County11.1+0.5 pts
42San Benito County10.9-0.1 pts
43Humboldt County10.7-0.6 pts
43Santa Clara County10.7+1.1 pts
45Butte County10.6-0.1 pts
45Placer County10.6+1.2 pts
47Santa Barbara County10.4-0.3 pts
48El Dorado County10.30 pts
48Mono County10.3+0.2 pts
48San Mateo County10.3+0.1 pts
48Sonoma County10.30 pts
52Santa Cruz County10+0.3 pts
53Alameda County9.9-0.2 pts
53San Diego County9.9-0.4 pts
53San Francisco County9.9+0.1 pts
56Marin County9.8+0.3 pts
57Yolo County9.7+0.4 pts
58San Luis Obispo County9.6-0.6 pts

Other periods

About this ranking

Percentage of adults who report being told by a doctor or other health professional that they have diabetes, other than diabetes only during pregnancy. Model-based estimate for adults aged 18 and over from CDC PLACES. Crude prevalence, not age-adjusted.

US counties and cities (incorporated places of 10,000 or more). CDC PLACES combines Behavioral Risk Factor Surveillance System (BRFSS) answers with local population data through multilevel regression and poststratification, so a county or city value is a model estimate, not a survey count. The year is the BRFSS survey year, not the release year. CDC says the method does not support tracking change in a place over time, and each annual release can change the model, so values for different years are not strictly comparable. A state is missing in a year when its BRFSS data did not meet standards (Kentucky and Pennsylvania in 2023, Florida in 2021). Connecticut counties appear as its nine planning regions from 2022; its eight former counties are not served. City values for 2021 come from the 2023 release, built on 2010 Census place boundaries; later years use 2020 boundaries.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

Centers for Disease Control and Prevention. (2025). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence (Counties in California by diagnosed diabetes in adults, local model estimate, 2022) [Data set]. Retrieved October 12, 2026, from https://www.cdc.gov/places/

MLA 9

PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in California by diagnosed diabetes in adults, local model estimate, 2022. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

Centers for Disease Control and Prevention. 2025. PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Counties in California by diagnosed diabetes in adults, local model estimate, 2022. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022.

Harvard

Centers for Disease Control and Prevention (2025) PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in California by diagnosed diabetes in adults, local model estimate, 2022 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_california_by_2022,
  author = {{Centers for Disease Control and Prevention}},
  title = {{PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in California by diagnosed diabetes in adults, local model estimate, 2022}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022. Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.},
}
RIS
TY  - DATA
AU  - Centers for Disease Control and Prevention
TI  - PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in California by diagnosed diabetes in adults, local model estimate, 2022
PY  - 2025
DA  - 2025/12/04
PB  - Centers for Disease Control and Prevention
DB  - Invokely
UR  - https://www.cdc.gov/places/
L2  - https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/california-counties?period=2022.
N1  - Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.
ER  - 
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Rank Counties in California by diagnosed diabetes in adults, local model estimate using official data, and cite the source.
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Questions

Which county has the highest diagnosed diabetes in adults, local model estimate?

Imperial County, with 15.4% in 2022, according to the Centers for Disease Control and Prevention.

Which county has the lowest diagnosed diabetes in adults, local model estimate?

San Luis Obispo County, with 9.6% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Diagnosed diabetes in adults, local model estimate: other rankings

Counties in California: more rankings