Counties in California by uninsured rate, under 65 (US model-based estimate)

Glenn County had the highest uninsured rate, under 65 (US model-based estimate) of 58 counties in 2014, at 18%. Santa Clara County had the lowest, at 8.4%. The median was 13.4% and the figure for California was 14.1%. Source: the U.S. Census Bureau.

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Highest18Glenn County
Median13.458 counties
California14.1History

Map of counties, 2014

Alameda County: 9.6 %Alpine County: 15.1 %Amador County: 10.4 %Butte County: 13.1 %Calaveras County: 10.6 %Colusa County: 16.9 %Contra Costa County: 9.8 %Del Norte County: 12.7 %El Dorado County: 9.3 %Fresno County: 15.4 %Glenn County: 18 %Humboldt County: 14.9 %Imperial County: 16 %Inyo County: 13.4 %Kern County: 14.5 %Kings County: 14.3 %Lake County: 15.9 %Lassen County: 9.3 %Los Angeles County: 17.4 %Madera County: 17.4 %Marin County: 8.7 %Mariposa County: 12.6 %Mendocino County: 15.8 %Merced County: 14.9 %Modoc County: 15.3 %Mono County: 16.5 %Monterey County: 17.4 %Napa County: 12.5 %Nevada County: 11.7 %Orange County: 13.4 %Placer County: 8.8 %Plumas County: 11.9 %Riverside County: 17 %Sacramento County: 11.5 %San Benito County: 13.5 %San Bernardino County: 14.7 %San Diego County: 13.4 %San Francisco County: 9.3 %San Joaquin County: 13.2 %San Luis Obispo County: 13.6 %San Mateo County: 9.1 %Santa Barbara County: 15.5 %Santa Clara County: 8.4 %Santa Cruz County: 12.9 %Shasta County: 13.5 %Sierra County: 15 %Siskiyou County: 14.6 %Solano County: 10.3 %Sonoma County: 12.8 %Stanislaus County: 12.8 %Sutter County: 14.6 %Tehama County: 13.3 %Trinity County: 12.7 %Tulare County: 16.7 %Tuolumne County: 11.5 %Ventura County: 13.1 %Yolo County: 11.3 %Yuba County: 14.3 %
  • Under 10
  • 10 to 13
  • 13 to 15
  • 15 to 16
  • 16 and over
%, 2014. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2014

Glenn County: 18 %Glenn County18Los Angeles County: 17.4 %Los Angeles County17.4Madera County: 17.4 %Madera County17.4Monterey County: 17.4 %Monterey County17.4Riverside County: 17 %Riverside County17Colusa County: 16.9 %Colusa County16.9Tulare County: 16.7 %Tulare County16.7Mono County: 16.5 %Mono County16.5Imperial County: 16 %Imperial County16Lake County: 15.9 %Lake County15.9Mendocino County: 15.8 %Mendocino County15.8Santa Barbara County: 15.5 %Santa Barbara County15.5Fresno County: 15.4 %Fresno County15.4Modoc County: 15.3 %Modoc County15.3Alpine County: 15.1 %Alpine County15.1Sierra County: 15 %Sierra County15Humboldt County: 14.9 %Humboldt County14.9Merced County: 14.9 %Merced County14.9San Bernardino County: 14.7 %San Bernardino County14.7Siskiyou County: 14.6 %Siskiyou County14.6Sutter County: 14.6 %Sutter County14.6Kern County: 14.5 %Kern County14.5Kings County: 14.3 %Kings County14.3Yuba County: 14.3 %Yuba County14.3San Luis Obispo County: 13.6 %San Luis Obispo County13.6San Benito County: 13.5 %San Benito County13.5Shasta County: 13.5 %Shasta County13.5Inyo County: 13.4 %Inyo County13.4Orange County: 13.4 %Orange County13.4San Diego County: 13.4 %San Diego County13.4Tehama County: 13.3 %Tehama County13.3San Joaquin County: 13.2 %San Joaquin County13.2Butte County: 13.1 %Butte County13.1Ventura County: 13.1 %Ventura County13.1Santa Cruz County: 12.9 %Santa Cruz County12.9Sonoma County: 12.8 %Sonoma County12.8Stanislaus County: 12.8 %Stanislaus County12.8Del Norte County: 12.7 %Del Norte County12.7Trinity County: 12.7 %Trinity County12.7Mariposa County: 12.6 %Mariposa County12.6Napa County: 12.5 %Napa County12.5Plumas County: 11.9 %Plumas County11.9Nevada County: 11.7 %Nevada County11.7Sacramento County: 11.5 %Sacramento County11.5Tuolumne County: 11.5 %Tuolumne County11.5Yolo County: 11.3 %Yolo County11.3Calaveras County: 10.6 %Calaveras County10.6Amador County: 10.4 %Amador County10.4Solano County: 10.3 %Solano County10.3Contra Costa County: 9.8 %Contra Costa County9.8Alameda County: 9.6 %Alameda County9.6El Dorado County: 9.3 %El Dorado County9.3Lassen County: 9.3 %Lassen County9.3San Francisco County: 9.3 %San Francisco County9.3San Mateo County: 9.1 %San Mateo County9.1Placer County: 8.8 %Placer County8.8Marin County: 8.7 %Marin County8.7Santa Clara County: 8.4 %Santa Clara County8.4Glenn County: 18 %Glenn County18Los Angeles County: 17.4 %Los Angeles County17.4Madera County: 17.4 %Madera County17.4Monterey County: 17.4 %Monterey County17.4Riverside County: 17 %Riverside County17Colusa County: 16.9 %Colusa County16.9Tulare County: 16.7 %Tulare County16.7Mono County: 16.5 %Mono County16.5Imperial County: 16 %Imperial County16Lake County: 15.9 %Lake County15.9Mendocino County: 15.8 %Mendocino County15.8Santa Barbara County: 15.5 %Santa Barbara County15.5Fresno County: 15.4 %Fresno County15.4Modoc County: 15.3 %Modoc County15.3Alpine County: 15.1 %Alpine County15.1Sierra County: 15 %Sierra County15Humboldt County: 14.9 %Humboldt County14.9Merced County: 14.9 %Merced County14.9San Bernardino County: 14.7 %San Bernardino County14.7Siskiyou County: 14.6 %Siskiyou County14.6Sutter County: 14.6 %Sutter County14.6Kern County: 14.5 %Kern County14.5Kings County: 14.3 %Kings County14.3Yuba County: 14.3 %Yuba County14.3San Luis Obispo County: 13.6 %San Luis Obispo County13.6San Benito County: 13.5 %San Benito County13.5Shasta County: 13.5 %Shasta County13.5Inyo County: 13.4 %Inyo County13.4Orange County: 13.4 %Orange County13.4San Diego County: 13.4 %San Diego County13.4Tehama County: 13.3 %Tehama County13.3San Joaquin County: 13.2 %San Joaquin County13.2Butte County: 13.1 %Butte County13.1Ventura County: 13.1 %Ventura County13.1Santa Cruz County: 12.9 %Santa Cruz County12.9Sonoma County: 12.8 %Sonoma County12.8Stanislaus County: 12.8 %Stanislaus County12.8Del Norte County: 12.7 %Del Norte County12.7Trinity County: 12.7 %Trinity County12.7Mariposa County: 12.6 %Mariposa County12.6Napa County: 12.5 %Napa County12.5Plumas County: 11.9 %Plumas County11.9Nevada County: 11.7 %Nevada County11.7Sacramento County: 11.5 %Sacramento County11.5Tuolumne County: 11.5 %Tuolumne County11.5Yolo County: 11.3 %Yolo County11.3Calaveras County: 10.6 %Calaveras County10.6Amador County: 10.4 %Amador County10.4Solano County: 10.3 %Solano County10.3Contra Costa County: 9.8 %Contra Costa County9.8Alameda County: 9.6 %Alameda County9.6El Dorado County: 9.3 %El Dorado County9.3Lassen County: 9.3 %Lassen County9.3San Francisco County: 9.3 %San Francisco County9.3San Mateo County: 9.1 %San Mateo County9.1Placer County: 8.8 %Placer County8.8Marin County: 8.7 %Marin County8.7Santa Clara County: 8.4 %Santa Clara County8.4
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Glenn County18-4.6 pts
2Los Angeles County17.4-6.3 pts
2Madera County17.4-5.4 pts
2Monterey County17.4-7 pts
5Riverside County17-4.9 pts
6Colusa County16.9-7.5 pts
7Tulare County16.7-4.5 pts
8Mono County16.5-7.1 pts
9Imperial County16-5.3 pts
10Lake County15.9-4.4 pts
11Mendocino County15.8-6.3 pts
12Santa Barbara County15.5-5.6 pts
13Fresno County15.4-4.9 pts
14Modoc County15.3-8.1 pts
15Alpine County15.1-2.6 pts
16Sierra County15-5.7 pts
17Humboldt County14.9-6 pts
17Merced County14.9-6.1 pts
19San Bernardino County14.7-5.7 pts
20Siskiyou County14.6-5.7 pts
20Sutter County14.6-6.3 pts
22Kern County14.5-5.9 pts
23Kings County14.3-4.5 pts
23Yuba County14.3-4.1 pts
25San Luis Obispo County13.6-2.2 pts
26San Benito County13.5-5.8 pts
26Shasta County13.5-4.5 pts
28Inyo County13.4-4.8 pts
28Orange County13.4-5.4 pts
28San Diego County13.4-4.5 pts
31Tehama County13.3-6 pts
32San Joaquin County13.2-6 pts
33Butte County13.1-4.1 pts
33Ventura County13.1-5 pts
35Santa Cruz County12.9-5.7 pts
36Sonoma County12.8-4.4 pts
36Stanislaus County12.8-7.8 pts
38Del Norte County12.7-4.3 pts
38Trinity County12.7-7.5 pts
40Mariposa County12.6-3 pts
41Napa County12.5-5.2 pts
42Plumas County11.9-6.6 pts
43Nevada County11.7-5.7 pts
44Sacramento County11.5-5.4 pts
44Tuolumne County11.5-4.5 pts
46Yolo County11.3-5.7 pts
47Calaveras County10.6-5.6 pts
48Amador County10.4-5.6 pts
49Solano County10.3-4.4 pts
50Contra Costa County9.8-4.2 pts
51Alameda County9.6-4.8 pts
52El Dorado County9.3-4 pts
52Lassen County9.3-3.6 pts
52San Francisco County9.3-3.2 pts
55San Mateo County9.1-3 pts
56Placer County8.8-4 pts
57Marin County8.7-3.3 pts
58Santa Clara County8.4-4.2 pts

Other periods

About this ranking

People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. People 65 and over are left out because nearly all of them have Medicare.

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

U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Retrieved 2026-10-12.

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

U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties (Counties in California by uninsured rate, under 65 (US model-based estimate), 2014) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in California by uninsured rate, under 65 (US model-based estimate), 2014. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in California by uninsured rate, under 65 (US model-based estimate), 2014. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in California by uninsured rate, under 65 (US model-based estimate), 2014 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2014,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in California by uninsured rate, under 65 (US model-based estimate), 2014}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in California by uninsured rate, under 65 (US model-based estimate), 2014
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/california-counties?period=2014.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest uninsured rate, under 65 (US model-based estimate)?

Glenn County, with 18% in 2014, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 65 (US model-based estimate)?

Santa Clara County, with 8.4% in 2014.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 65 (US model-based estimate): other rankings

Counties in California: more rankings