Counties in California by uninsured rate, under 19 (US model-based estimate)

Glenn County had the highest uninsured rate, under 19 (US model-based estimate) of 58 counties in 2019, at 5.8%. San Francisco County had the lowest, at 2.5%. The median was 3.8% and the figure for California was 3.5%. Source: the U.S. Census Bureau.

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Highest5.8Glenn County
Median3.858 counties
California3.5History

Map of counties, 2019

Alameda County: 2.7 %Alpine County: 5.7 %Amador County: 4.1 %Butte County: 2.8 %Calaveras County: 4.3 %Colusa County: 5.6 %Contra Costa County: 3 %Del Norte County: 3.8 %El Dorado County: 3.4 %Fresno County: 3.5 %Glenn County: 5.8 %Humboldt County: 4.2 %Imperial County: 3.4 %Inyo County: 5 %Kern County: 3.4 %Kings County: 3.5 %Lake County: 4.2 %Lassen County: 2.5 %Los Angeles County: 3.9 %Madera County: 3.9 %Marin County: 3.1 %Mariposa County: 5.7 %Mendocino County: 4.9 %Merced County: 3.6 %Modoc County: 5.4 %Mono County: 5.8 %Monterey County: 4 %Napa County: 4.6 %Nevada County: 4 %Orange County: 3.8 %Placer County: 2.6 %Plumas County: 4 %Riverside County: 3.5 %Sacramento County: 2.9 %San Benito County: 4.4 %San Bernardino County: 3.8 %San Diego County: 3.7 %San Francisco County: 2.5 %San Joaquin County: 3.3 %San Luis Obispo County: 3.9 %San Mateo County: 3.1 %Santa Barbara County: 4.4 %Santa Clara County: 2.6 %Santa Cruz County: 4 %Shasta County: 3.1 %Sierra County: 4.3 %Siskiyou County: 4.4 %Solano County: 2.8 %Sonoma County: 4.3 %Stanislaus County: 3.5 %Sutter County: 3.9 %Tehama County: 3.6 %Trinity County: 5.3 %Tulare County: 3.1 %Tuolumne County: 3.9 %Ventura County: 4 %Yolo County: 3 %Yuba County: 3.6 %
  • Under 3
  • 3 to 3.5
  • 3.5 to 3.8
  • 3.8 to 4
  • 4 to 4.5
  • 4.5 and over
%, 2019. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

Glenn County: 5.8 %Glenn County5.8Mono County: 5.8 %Mono County5.8Alpine County: 5.7 %Alpine County5.7Mariposa County: 5.7 %Mariposa County5.7Colusa County: 5.6 %Colusa County5.6Modoc County: 5.4 %Modoc County5.4Trinity County: 5.3 %Trinity County5.3Inyo County: 5 %Inyo County5Mendocino County: 4.9 %Mendocino County4.9Napa County: 4.6 %Napa County4.6San Benito County: 4.4 %San Benito County4.4Santa Barbara County: 4.4 %Santa Barbara County4.4Siskiyou County: 4.4 %Siskiyou County4.4Calaveras County: 4.3 %Calaveras County4.3Sierra County: 4.3 %Sierra County4.3Sonoma County: 4.3 %Sonoma County4.3Humboldt County: 4.2 %Humboldt County4.2Lake County: 4.2 %Lake County4.2Amador County: 4.1 %Amador County4.1Monterey County: 4 %Monterey County4Nevada County: 4 %Nevada County4Plumas County: 4 %Plumas County4Santa Cruz County: 4 %Santa Cruz County4Ventura County: 4 %Ventura County4Los Angeles County: 3.9 %Los Angeles County3.9Madera County: 3.9 %Madera County3.9San Luis Obispo County: 3.9 %San Luis Obispo County3.9Sutter County: 3.9 %Sutter County3.9Tuolumne County: 3.9 %Tuolumne County3.9Del Norte County: 3.8 %Del Norte County3.8Orange County: 3.8 %Orange County3.8San Bernardino County: 3.8 %San Bernardino County3.8San Diego County: 3.7 %San Diego County3.7Merced County: 3.6 %Merced County3.6Tehama County: 3.6 %Tehama County3.6Yuba County: 3.6 %Yuba County3.6Fresno County: 3.5 %Fresno County3.5Kings County: 3.5 %Kings County3.5Riverside County: 3.5 %Riverside County3.5Stanislaus County: 3.5 %Stanislaus County3.5El Dorado County: 3.4 %El Dorado County3.4Imperial County: 3.4 %Imperial County3.4Kern County: 3.4 %Kern County3.4San Joaquin County: 3.3 %San Joaquin County3.3Marin County: 3.1 %Marin County3.1San Mateo County: 3.1 %San Mateo County3.1Shasta County: 3.1 %Shasta County3.1Tulare County: 3.1 %Tulare County3.1Contra Costa County: 3 %Contra Costa County3Yolo County: 3 %Yolo County3Sacramento County: 2.9 %Sacramento County2.9Butte County: 2.8 %Butte County2.8Solano County: 2.8 %Solano County2.8Alameda County: 2.7 %Alameda County2.7Placer County: 2.6 %Placer County2.6Santa Clara County: 2.6 %Santa Clara County2.6Lassen County: 2.5 %Lassen County2.5San Francisco County: 2.5 %San Francisco County2.5Glenn County: 5.8 %Glenn County5.8Mono County: 5.8 %Mono County5.8Alpine County: 5.7 %Alpine County5.7Mariposa County: 5.7 %Mariposa County5.7Colusa County: 5.6 %Colusa County5.6Modoc County: 5.4 %Modoc County5.4Trinity County: 5.3 %Trinity County5.3Inyo County: 5 %Inyo County5Mendocino County: 4.9 %Mendocino County4.9Napa County: 4.6 %Napa County4.6San Benito County: 4.4 %San Benito County4.4Santa Barbara County: 4.4 %Santa Barbara County4.4Siskiyou County: 4.4 %Siskiyou County4.4Calaveras County: 4.3 %Calaveras County4.3Sierra County: 4.3 %Sierra County4.3Sonoma County: 4.3 %Sonoma County4.3Humboldt County: 4.2 %Humboldt County4.2Lake County: 4.2 %Lake County4.2Amador County: 4.1 %Amador County4.1Monterey County: 4 %Monterey County4Nevada County: 4 %Nevada County4Plumas County: 4 %Plumas County4Santa Cruz County: 4 %Santa Cruz County4Ventura County: 4 %Ventura County4Los Angeles County: 3.9 %Los Angeles County3.9Madera County: 3.9 %Madera County3.9San Luis Obispo County: 3.9 %San Luis Obispo County3.9Sutter County: 3.9 %Sutter County3.9Tuolumne County: 3.9 %Tuolumne County3.9Del Norte County: 3.8 %Del Norte County3.8Orange County: 3.8 %Orange County3.8San Bernardino County: 3.8 %San Bernardino County3.8San Diego County: 3.7 %San Diego County3.7Merced County: 3.6 %Merced County3.6Tehama County: 3.6 %Tehama County3.6Yuba County: 3.6 %Yuba County3.6Fresno County: 3.5 %Fresno County3.5Kings County: 3.5 %Kings County3.5Riverside County: 3.5 %Riverside County3.5Stanislaus County: 3.5 %Stanislaus County3.5El Dorado County: 3.4 %El Dorado County3.4Imperial County: 3.4 %Imperial County3.4Kern County: 3.4 %Kern County3.4San Joaquin County: 3.3 %San Joaquin County3.3Marin County: 3.1 %Marin County3.1San Mateo County: 3.1 %San Mateo County3.1Shasta County: 3.1 %Shasta County3.1Tulare County: 3.1 %Tulare County3.1Contra Costa County: 3 %Contra Costa County3Yolo County: 3 %Yolo County3Sacramento County: 2.9 %Sacramento County2.9Butte County: 2.8 %Butte County2.8Solano County: 2.8 %Solano County2.8Alameda County: 2.7 %Alameda County2.7Placer County: 2.6 %Placer County2.6Santa Clara County: 2.6 %Santa Clara County2.6Lassen County: 2.5 %Lassen County2.5San Francisco County: 2.5 %San Francisco County2.5
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1Glenn County5.8+1.1 pts
1Mono County5.8+1.3 pts
3Alpine County5.7+1.4 pts
3Mariposa County5.7+1.6 pts
5Colusa County5.6+1.4 pts
6Modoc County5.4+1.4 pts
7Trinity County5.3+0.7 pts
8Inyo County5+1.3 pts
9Mendocino County4.9+0.7 pts
10Napa County4.6+1.4 pts
11San Benito County4.4+1.1 pts
11Santa Barbara County4.4+0.3 pts
11Siskiyou County4.4+0.4 pts
14Calaveras County4.3+0.7 pts
14Sierra County4.3+0.6 pts
14Sonoma County4.3+0.9 pts
17Humboldt County4.2+0.9 pts
17Lake County4.2+0.7 pts
19Amador County4.1+0.9 pts
20Monterey County4+0.3 pts
20Nevada County4+0.9 pts
20Plumas County4+0.8 pts
20Santa Cruz County4+0.4 pts
20Ventura County4+0.9 pts
25Los Angeles County3.9+0.5 pts
25Madera County3.90 pts
25San Luis Obispo County3.9+0.7 pts
25Sutter County3.9+0.6 pts
25Tuolumne County3.9+1 pts
30Del Norte County3.8+0.7 pts
30Orange County3.8+0.7 pts
30San Bernardino County3.8+0.2 pts
33San Diego County3.7-0.3 pts
34Merced County3.6+0.5 pts
34Tehama County3.6+0.3 pts
34Yuba County3.6+0.8 pts
37Fresno County3.5+0.9 pts
37Kings County3.5+0.4 pts
37Riverside County3.5+0.1 pts
37Stanislaus County3.5+0.5 pts
41El Dorado County3.4+0.7 pts
41Imperial County3.4+0.7 pts
41Kern County3.4-0.1 pts
44San Joaquin County3.3+0.7 pts
45Marin County3.1+0.7 pts
45San Mateo County3.1+0.7 pts
45Shasta County3.1+0.3 pts
45Tulare County3.1-0.1 pts
49Contra Costa County3+0.2 pts
49Yolo County3+0.3 pts
51Sacramento County2.9+0.5 pts
52Butte County2.8-0.3 pts
52Solano County2.8+0.4 pts
54Alameda County2.7+0.4 pts
55Placer County2.6+0.4 pts
55Santa Clara County2.6+0.3 pts
57Lassen County2.50 pts
57San Francisco County2.5+0.2 pts

Other periods

About this ranking

People under 19 without health insurance coverage of any kind, as a percentage of all people under 19. 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. Under 19 matches the age limit for children in Medicaid and the Children's Health Insurance Program (CHIP).

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 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-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 19, all races, both sexes, all income levels, states and counties (Counties in California by uninsured rate, under 19 (US model-based estimate), 2019) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties, Counties in California by uninsured rate, under 19 (US model-based estimate), 2019. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Counties in California by uninsured rate, under 19 (US model-based estimate), 2019. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties, Counties in California by uninsured rate, under 19 (US model-based estimate), 2019 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2019,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties: Counties in California by uninsured rate, under 19 (US model-based estimate), 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties: Counties in California by uninsured rate, under 19 (US model-based estimate), 2019
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-2019-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/california-counties?period=2019.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest uninsured rate, under 19 (US model-based estimate)?

Glenn County, with 5.8% in 2019, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US model-based estimate)?

San Francisco County, with 2.5% in 2019.

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 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 19 (US model-based estimate): other rankings

Counties in California: more rankings