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

Counties in Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024

Yuma County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 64 counties in 2024, at 21%. Douglas County had the lowest, at 4.8%. The median was 12.3% and the figure for Colorado was 10.4%. Source: the U.S. Census Bureau.

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Highest21Yuma County
Lowest4.8Douglas County
Median12.364 counties
Colorado10.4History

Map of counties, 2024

Adams County: 15.1 %Alamosa County: 13.2 %Arapahoe County: 11.7 %Archuleta County: 12.6 %Baca County: 15.6 %Bent County: 14.4 %Boulder County: 8.1 %Broomfield County: 6.2 %Chaffee County: 8.9 %Cheyenne County: 14.6 %Clear Creek County: 8.4 %Conejos County: 13.4 %Costilla County: 14.5 %Crowley County: 15.5 %Custer County: 10.2 %Delta County: 15.1 %Denver County: 11.2 %Dolores County: 9.6 %Douglas County: 4.8 %Eagle County: 13.3 %Elbert County: 7.9 %El Paso County: 9.5 %Fremont County: 11.2 %Garfield County: 15.2 %Gilpin County: 5.7 %Grand County: 11.1 %Gunnison County: 6.8 %Hinsdale County: 7.7 %Huerfano County: 13.1 %Jackson County: 15.9 %Jefferson County: 7.9 %Kiowa County: 12.9 %Kit Carson County: 16.3 %Lake County: 11.9 %La Plata County: 9.4 %Larimer County: 7.9 %Las Animas County: 14.6 %Lincoln County: 13.7 %Logan County: 12.7 %Mesa County: 12.8 %Mineral County: 6.4 %Moffat County: 13.4 %Montezuma County: 14.8 %Montrose County: 15.7 %Morgan County: 18.6 %Otero County: 13 %Ouray County: 7.2 %Park County: 7.2 %Phillips County: 14.1 %Pitkin County: 8.3 %Prowers County: 16.6 %Pueblo County: 11.4 %Rio Blanco County: 10.4 %Rio Grande County: 16.7 %Routt County: 9.4 %Saguache County: 17.5 %San Juan County: 7.7 %San Miguel County: 7.8 %Sedgwick County: 14.7 %Summit County: 11.5 %Teller County: 8.6 %Washington County: 13.4 %Weld County: 11.7 %Yuma County: 21 %
  • Under 7.9
  • 7.9 to 9.6
  • 9.6 to 12
  • 12 to 13
  • 13 to 15
  • 15 and over
%, 2024. 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.

Top 40 counties, 2024

Yuma County: 21 %Yuma County21Morgan County: 18.6 %Morgan County18.6Saguache County: 17.5 %Saguache County17.5Rio Grande County: 16.7 %Rio Grande County16.7Prowers County: 16.6 %Prowers County16.6Kit Carson County: 16.3 %Kit Carson County16.3Jackson County: 15.9 %Jackson County15.9Montrose County: 15.7 %Montrose County15.7Baca County: 15.6 %Baca County15.6Crowley County: 15.5 %Crowley County15.5Garfield County: 15.2 %Garfield County15.2Adams County: 15.1 %Adams County15.1Delta County: 15.1 %Delta County15.1Montezuma County: 14.8 %Montezuma County14.8Sedgwick County: 14.7 %Sedgwick County14.7Cheyenne County: 14.6 %Cheyenne County14.6Las Animas County: 14.6 %Las Animas County14.6Costilla County: 14.5 %Costilla County14.5Bent County: 14.4 %Bent County14.4Phillips County: 14.1 %Phillips County14.1Lincoln County: 13.7 %Lincoln County13.7Conejos County: 13.4 %Conejos County13.4Moffat County: 13.4 %Moffat County13.4Washington County: 13.4 %Washington County13.4Eagle County: 13.3 %Eagle County13.3Alamosa County: 13.2 %Alamosa County13.2Huerfano County: 13.1 %Huerfano County13.1Otero County: 13 %Otero County13Kiowa County: 12.9 %Kiowa County12.9Mesa County: 12.8 %Mesa County12.8Logan County: 12.7 %Logan County12.7Archuleta County: 12.6 %Archuleta County12.6Lake County: 11.9 %Lake County11.9Arapahoe County: 11.7 %Arapahoe County11.7Weld County: 11.7 %Weld County11.7Summit County: 11.5 %Summit County11.5Pueblo County: 11.4 %Pueblo County11.4Denver County: 11.2 %Denver County11.2Fremont County: 11.2 %Fremont County11.2Grand County: 11.1 %Grand County11.1Yuma County: 21 %Yuma County21Morgan County: 18.6 %Morgan County18.6Saguache County: 17.5 %Saguache County17.5Rio Grande County: 16.7 %Rio Grande County16.7Prowers County: 16.6 %Prowers County16.6Kit Carson County: 16.3 %Kit Carson County16.3Jackson County: 15.9 %Jackson County15.9Montrose County: 15.7 %Montrose County15.7Baca County: 15.6 %Baca County15.6Crowley County: 15.5 %Crowley County15.5Garfield County: 15.2 %Garfield County15.2Adams County: 15.1 %Adams County15.1Delta County: 15.1 %Delta County15.1Montezuma County: 14.8 %Montezuma County14.8Sedgwick County: 14.7 %Sedgwick County14.7Cheyenne County: 14.6 %Cheyenne County14.6Las Animas County: 14.6 %Las Animas County14.6Costilla County: 14.5 %Costilla County14.5Bent County: 14.4 %Bent County14.4Phillips County: 14.1 %Phillips County14.1Lincoln County: 13.7 %Lincoln County13.7Conejos County: 13.4 %Conejos County13.4Moffat County: 13.4 %Moffat County13.4Washington County: 13.4 %Washington County13.4Eagle County: 13.3 %Eagle County13.3Alamosa County: 13.2 %Alamosa County13.2Huerfano County: 13.1 %Huerfano County13.1Otero County: 13 %Otero County13Kiowa County: 12.9 %Kiowa County12.9Mesa County: 12.8 %Mesa County12.8Logan County: 12.7 %Logan County12.7Archuleta County: 12.6 %Archuleta County12.6Lake County: 11.9 %Lake County11.9Arapahoe County: 11.7 %Arapahoe County11.7Weld County: 11.7 %Weld County11.7Summit County: 11.5 %Summit County11.5Pueblo County: 11.4 %Pueblo County11.4Denver County: 11.2 %Denver County11.2Fremont County: 11.2 %Fremont County11.2Grand County: 11.1 %Grand County11.1
%. 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

RankCounties2024 (%)Change on 2023
1Yuma County21+3.2 pts
2Morgan County18.6+4.9 pts
3Saguache County17.5+3.5 pts
4Rio Grande County16.7+2.7 pts
5Prowers County16.6+3.1 pts
6Kit Carson County16.3+2 pts
7Jackson County15.9+1 pts
8Montrose County15.7+3.1 pts
9Baca County15.6+3.4 pts
10Crowley County15.5+1.9 pts
11Garfield County15.2+0.7 pts
12Adams County15.1+2.7 pts
12Delta County15.1+1.5 pts
14Montezuma County14.8+1.9 pts
15Sedgwick County14.7+2.3 pts
16Cheyenne County14.6+2 pts
16Las Animas County14.6+2.3 pts
18Costilla County14.5+1.9 pts
19Bent County14.4+4 pts
20Phillips County14.1+0.3 pts
21Lincoln County13.7+2.9 pts
22Conejos County13.4+2.6 pts
22Moffat County13.4+1.3 pts
22Washington County13.4+1.9 pts
25Eagle County13.3+1 pts
26Alamosa County13.2+2.1 pts
27Huerfano County13.1+3.8 pts
28Otero County13+0.6 pts
29Kiowa County12.9+2.6 pts
30Mesa County12.8+1.4 pts
31Logan County12.7+2 pts
32Archuleta County12.6+0.5 pts
33Lake County11.9+3 pts
34Arapahoe County11.7+0.2 pts
34Weld County11.7+0.6 pts
36Summit County11.5+1.2 pts
37Pueblo County11.4+2.5 pts
38Denver County11.2+1.5 pts
38Fremont County11.2+1.4 pts
40Grand County11.1+0.3 pts
41Rio Blanco County10.4+0.4 pts
42Custer County10.2+0.1 pts
43Dolores County9.6+1.7 pts
44El Paso County9.5+1.5 pts
45La Plata County9.4-0.1 pts
45Routt County9.4+1.2 pts
47Chaffee County8.9+0.6 pts
48Teller County8.6+1.5 pts
49Clear Creek County8.4+1.8 pts
50Pitkin County8.3+1.7 pts
51Boulder County8.1+0.5 pts
52Elbert County7.9+1.2 pts
52Jefferson County7.9+1.1 pts
52Larimer County7.9+0.4 pts
55San Miguel County7.8+0.1 pts
56Hinsdale County7.7-3 pts
56San Juan County7.7-4.1 pts
58Ouray County7.2+1.4 pts
58Park County7.2+0.7 pts
60Gunnison County6.8-0.1 pts
61Mineral County6.4-1.2 pts
62Broomfield County6.2+1.4 pts
63Gilpin County5.7+0.9 pts
64Douglas County4.8+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-2024-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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties. 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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties.

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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2024,
  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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties. 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-2024-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 Colorado by uninsured rate, ages 18 to 64 (US model-based estimate), 2024
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-2024-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties.
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-2024-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

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

Yuma County, with 21% in 2024, according to the U.S. Census Bureau.

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

Douglas County, with 4.8% in 2024.

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 Colorado: more rankings