Data / Rankings / Uninsured rate, all ages (US) / Counties in Colorado

Counties in Colorado by uninsured rate, all ages (US)

Garfield County had the highest uninsured rate, all ages (US) of 64 counties in 2021, at 16.8%. Douglas County had the lowest, at 3.6%. The median was 9.5% and the figure for Colorado was 7.9%. Source: the U.S. Census Bureau.

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Highest16.8Garfield County
Lowest3.6Douglas County
Median9.564 counties
Colorado7.9History

Map of counties, 2021

Adams County: 10.5 %Alamosa County: 10.3 %Arapahoe County: 8.3 %Archuleta County: 11.8 %Baca County: 7.5 %Bent County: 9.8 %Boulder County: 4.6 %Broomfield County: 5.8 %Chaffee County: 8.6 %Cheyenne County: 6.7 %Clear Creek County: 9.7 %Conejos County: 13.9 %Costilla County: 8.9 %Crowley County: 8.4 %Custer County: 11.6 %Delta County: 10 %Denver County: 9.6 %Dolores County: 7.3 %Douglas County: 3.6 %Eagle County: 10.1 %Elbert County: 6.3 %El Paso County: 7.3 %Fremont County: 7.8 %Garfield County: 16.8 %Gilpin County: 6.6 %Grand County: 14.3 %Gunnison County: 9.5 %Hinsdale County: 12.2 %Huerfano County: 7.1 %Jackson County: 9.3 %Jefferson County: 5.3 %Kiowa County: 5.8 %Kit Carson County: 9.8 %Lake County: 16 %La Plata County: 10 %Larimer County: 6 %Las Animas County: 10.3 %Lincoln County: 8.1 %Logan County: 8.1 %Mesa County: 9.5 %Mineral County: 16 %Moffat County: 11.8 %Montezuma County: 12.2 %Montrose County: 13.3 %Morgan County: 11.2 %Otero County: 8.3 %Ouray County: 14 %Park County: 8.3 %Phillips County: 11 %Pitkin County: 6.3 %Prowers County: 11.2 %Pueblo County: 6.6 %Rio Blanco County: 11.8 %Rio Grande County: 14.4 %Routt County: 7.7 %Saguache County: 10.1 %San Juan County: 14.5 %San Miguel County: 9.8 %Sedgwick County: 8.6 %Summit County: 13 %Teller County: 8.6 %Washington County: 4.2 %Weld County: 8.8 %Yuma County: 12.3 %
  • Under 6.7
  • 6.7 to 8.3
  • 8.3 to 9.5
  • 9.5 to 10
  • 10 to 12
  • 12 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Garfield County: 16.8 %Garfield County16.8Lake County: 16 %Lake County16Mineral County: 16 %Mineral County16San Juan County: 14.5 %San Juan County14.5Rio Grande County: 14.4 %Rio Grande County14.4Grand County: 14.3 %Grand County14.3Ouray County: 14 %Ouray County14Conejos County: 13.9 %Conejos County13.9Montrose County: 13.3 %Montrose County13.3Summit County: 13 %Summit County13Yuma County: 12.3 %Yuma County12.3Hinsdale County: 12.2 %Hinsdale County12.2Montezuma County: 12.2 %Montezuma County12.2Archuleta County: 11.8 %Archuleta County11.8Moffat County: 11.8 %Moffat County11.8Rio Blanco County: 11.8 %Rio Blanco County11.8Custer County: 11.6 %Custer County11.6Morgan County: 11.2 %Morgan County11.2Prowers County: 11.2 %Prowers County11.2Phillips County: 11 %Phillips County11Adams County: 10.5 %Adams County10.5Alamosa County: 10.3 %Alamosa County10.3Las Animas County: 10.3 %Las Animas County10.3Eagle County: 10.1 %Eagle County10.1Saguache County: 10.1 %Saguache County10.1La Plata County: 10 %La Plata County10Delta County: 10 %Delta County10San Miguel County: 9.8 %San Miguel County9.8Bent County: 9.8 %Bent County9.8Kit Carson County: 9.8 %Kit Carson County9.8Clear Creek County: 9.7 %Clear Creek County9.7Denver County: 9.6 %Denver County9.6Gunnison County: 9.5 %Gunnison County9.5Mesa County: 9.5 %Mesa County9.5Jackson County: 9.3 %Jackson County9.3Costilla County: 8.9 %Costilla County8.9Weld County: 8.8 %Weld County8.8Sedgwick County: 8.6 %Sedgwick County8.6Teller County: 8.6 %Teller County8.6Chaffee County: 8.6 %Chaffee County8.6Garfield County: 16.8 %Garfield County16.8Lake County: 16 %Lake County16Mineral County: 16 %Mineral County16San Juan County: 14.5 %San Juan County14.5Rio Grande County: 14.4 %Rio Grande County14.4Grand County: 14.3 %Grand County14.3Ouray County: 14 %Ouray County14Conejos County: 13.9 %Conejos County13.9Montrose County: 13.3 %Montrose County13.3Summit County: 13 %Summit County13Yuma County: 12.3 %Yuma County12.3Hinsdale County: 12.2 %Hinsdale County12.2Montezuma County: 12.2 %Montezuma County12.2Archuleta County: 11.8 %Archuleta County11.8Moffat County: 11.8 %Moffat County11.8Rio Blanco County: 11.8 %Rio Blanco County11.8Custer County: 11.6 %Custer County11.6Morgan County: 11.2 %Morgan County11.2Prowers County: 11.2 %Prowers County11.2Phillips County: 11 %Phillips County11Adams County: 10.5 %Adams County10.5Alamosa County: 10.3 %Alamosa County10.3Las Animas County: 10.3 %Las Animas County10.3Eagle County: 10.1 %Eagle County10.1Saguache County: 10.1 %Saguache County10.1La Plata County: 10 %La Plata County10Delta County: 10 %Delta County10San Miguel County: 9.8 %San Miguel County9.8Bent County: 9.8 %Bent County9.8Kit Carson County: 9.8 %Kit Carson County9.8Clear Creek County: 9.7 %Clear Creek County9.7Denver County: 9.6 %Denver County9.6Gunnison County: 9.5 %Gunnison County9.5Mesa County: 9.5 %Mesa County9.5Jackson County: 9.3 %Jackson County9.3Costilla County: 8.9 %Costilla County8.9Weld County: 8.8 %Weld County8.8Sedgwick County: 8.6 %Sedgwick County8.6Teller County: 8.6 %Teller County8.6Chaffee County: 8.6 %Chaffee County8.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Garfield County16.8
2Lake County16
3Mineral County16
4San Juan County14.5
5Rio Grande County14.4
6Grand County14.3
7Ouray County14
8Conejos County13.9
9Montrose County13.3
10Summit County13
11Yuma County12.3
12Hinsdale County12.2
13Montezuma County12.2
14Archuleta County11.8
15Moffat County11.8
16Rio Blanco County11.8
17Custer County11.6
18Morgan County11.2
19Prowers County11.2
20Phillips County11
21Adams County10.5
22Alamosa County10.3
23Las Animas County10.3
24Eagle County10.1
25Saguache County10.1
26La Plata County10
27Delta County10
28San Miguel County9.8
29Bent County9.8
30Kit Carson County9.8
31Clear Creek County9.7
32Denver County9.6
33Gunnison County9.5
33Mesa County9.5
35Jackson County9.3
36Costilla County8.9
37Weld County8.8
38Sedgwick County8.6
38Teller County8.6
40Chaffee County8.6
41Crowley County8.4
42Park County8.3
43Otero County8.3
44Arapahoe County8.3
45Logan County8.1
46Lincoln County8.1
47Fremont County7.8
48Routt County7.7
49Baca County7.5
50Dolores County7.3
51El Paso County7.3
52Huerfano County7.1
53Cheyenne County6.7
54Gilpin County6.6
55Pueblo County6.6
56Elbert County6.3
57Pitkin County6.3
58Larimer County6
59Broomfield County5.8
60Kiowa County5.8
61Jefferson County5.3
62Boulder County4.6
63Washington County4.2
64Douglas County3.6

Other periods

About this ranking

People without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

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. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. 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). American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs (Counties in Colorado by uninsured rate, all ages (US), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Colorado by uninsured rate, all ages (US), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Counties in Colorado by uninsured rate, all ages (US), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in Colorado by uninsured rate, all ages (US), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Colorado by uninsured rate, all ages (US), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in Colorado by uninsured rate, all ages (US), 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/colorado-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, all ages (US)?

Garfield County, with 16.8% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, all ages (US)?

Douglas County, with 3.6% 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, American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, all ages (US): other rankings

Counties in Colorado: more rankings