Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Arizona

Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate)

La Paz County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 15 counties in 2021, at 22.6%. Greenlee County had the lowest, at 11%. The median was 16.1% and the figure for Arizona was 15%. Source: the U.S. Census Bureau.

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Highest22.6La Paz County
Lowest11Greenlee County
Median16.115 counties
Arizona15History

Map of counties, 2021

Apache County: 20.1 %Cochise County: 13.5 %Coconino County: 16.1 %Gila County: 17.8 %Graham County: 15.5 %Greenlee County: 11 %La Paz County: 22.6 %Maricopa County: 14.6 %Mohave County: 15.5 %Navajo County: 19.4 %Pima County: 13.6 %Pinal County: 15.2 %Santa Cruz County: 21.3 %Yavapai County: 16.8 %Yuma County: 22.6 %
  • Under 14
  • 14 to 16
  • 16 to 17
  • 17 to 20
  • 20 and over
%, 2021. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

La Paz County: 22.6 %La Paz County22.6Yuma County: 22.6 %Yuma County22.6Santa Cruz County: 21.3 %Santa Cruz County21.3Apache County: 20.1 %Apache County20.1Navajo County: 19.4 %Navajo County19.4Gila County: 17.8 %Gila County17.8Yavapai County: 16.8 %Yavapai County16.8Coconino County: 16.1 %Coconino County16.1Graham County: 15.5 %Graham County15.5Mohave County: 15.5 %Mohave County15.5Pinal County: 15.2 %Pinal County15.2Maricopa County: 14.6 %Maricopa County14.6Pima County: 13.6 %Pima County13.6Cochise County: 13.5 %Cochise County13.5Greenlee County: 11 %Greenlee County11La Paz County: 22.6 %La Paz County22.6Yuma County: 22.6 %Yuma County22.6Santa Cruz County: 21.3 %Santa Cruz County21.3Apache County: 20.1 %Apache County20.1Navajo County: 19.4 %Navajo County19.4Gila County: 17.8 %Gila County17.8Yavapai County: 16.8 %Yavapai County16.8Coconino County: 16.1 %Coconino County16.1Graham County: 15.5 %Graham County15.5Mohave County: 15.5 %Mohave County15.5Pinal County: 15.2 %Pinal County15.2Maricopa County: 14.6 %Maricopa County14.6Pima County: 13.6 %Pima County13.6Cochise County: 13.5 %Cochise County13.5Greenlee County: 11 %Greenlee County11
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1La Paz County22.6+0.1 pts
1Yuma County22.6+2.6 pts
3Santa Cruz County21.3-1.2 pts
4Apache County20.1-1.6 pts
5Navajo County19.4-0.1 pts
6Gila County17.8+2.5 pts
7Yavapai County16.8+1.8 pts
8Coconino County16.1-1.1 pts
9Graham County15.5-1.4 pts
9Mohave County15.5-0.7 pts
11Pinal County15.2+0.6 pts
12Maricopa County14.6-0.5 pts
13Pima County13.6-0.1 pts
14Cochise County13.5-0.6 pts
15Greenlee County11+0.3 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. 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. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-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, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_arizona_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate), 2021
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-2021-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/arizona-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Retrieved 2026-10-12.
ER  -
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Rank Counties in Arizona by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_18_64","level":"province","within":"Arizona","limit":10}
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Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

La Paz County, with 22.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Greenlee County, with 11% in 2021.

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, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Arizona: more rankings