Data / Rankings / Uninsured rate, ages 19 to 34 (US, ACS) / Counties in Colorado

Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS)

Mineral County had the highest uninsured rate, ages 19 to 34 (US, ACS) of 64 counties in 2021, at 52.6%. Cheyenne County had the lowest, at 2.4%. The median was 16.3% and the figure for Colorado was 12.8%. Source: the U.S. Census Bureau.

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Highest52.6Mineral County
Lowest2.4Cheyenne County
Median16.364 counties
Colorado12.8History

Map of counties, 2021

Adams County: 16.3 %Alamosa County: 18.8 %Arapahoe County: 14.3 %Archuleta County: 21.5 %Baca County: 13.5 %Bent County: 31.1 %Boulder County: 7.2 %Broomfield County: 11.9 %Chaffee County: 21.9 %Cheyenne County: 2.4 %Clear Creek County: 29.6 %Conejos County: 20.9 %Costilla County: 16 %Crowley County: 13.7 %Custer County: 12.6 %Delta County: 18.3 %Denver County: 12.6 %Dolores County: 19.4 %Douglas County: 7.2 %Eagle County: 16.2 %Elbert County: 14.4 %El Paso County: 12.7 %Fremont County: 19.9 %Garfield County: 26.5 %Gilpin County: 14.1 %Grand County: 31.5 %Gunnison County: 16.5 %Hinsdale County: 8.6 %Huerfano County: 14.1 %Jackson County: 28.1 %Jefferson County: 9.2 %Kiowa County: 15.2 %Kit Carson County: 11.6 %Lake County: 16.9 %La Plata County: 14.9 %Larimer County: 9.2 %Las Animas County: 20.4 %Lincoln County: 18 %Logan County: 14.2 %Mesa County: 15.4 %Mineral County: 52.6 %Moffat County: 18.1 %Montezuma County: 18.4 %Montrose County: 25.7 %Morgan County: 17.1 %Otero County: 17.7 %Ouray County: 39.3 %Park County: 19.2 %Phillips County: 17.3 %Pitkin County: 8 %Prowers County: 17.7 %Pueblo County: 12.4 %Rio Blanco County: 14.8 %Rio Grande County: 22.2 %Routt County: 15.6 %Saguache County: 19.6 %San Juan County: 21.7 %San Miguel County: 20.6 %Sedgwick County: 6.7 %Summit County: 19.6 %Teller County: 11.3 %Washington County: 5.4 %Weld County: 14.4 %Yuma County: 10.8 %
  • Under 11
  • 11 to 14
  • 14 to 16
  • 16 to 18
  • 18 to 22
  • 22 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

Mineral County: 52.6 %Mineral County52.6Ouray County: 39.3 %Ouray County39.3Grand County: 31.5 %Grand County31.5Bent County: 31.1 %Bent County31.1Clear Creek County: 29.6 %Clear Creek County29.6Jackson County: 28.1 %Jackson County28.1Garfield County: 26.5 %Garfield County26.5Montrose County: 25.7 %Montrose County25.7Rio Grande County: 22.2 %Rio Grande County22.2Chaffee County: 21.9 %Chaffee County21.9San Juan County: 21.7 %San Juan County21.7Archuleta County: 21.5 %Archuleta County21.5Conejos County: 20.9 %Conejos County20.9San Miguel County: 20.6 %San Miguel County20.6Las Animas County: 20.4 %Las Animas County20.4Fremont County: 19.9 %Fremont County19.9Summit County: 19.6 %Summit County19.6Saguache County: 19.6 %Saguache County19.6Dolores County: 19.4 %Dolores County19.4Park County: 19.2 %Park County19.2Alamosa County: 18.8 %Alamosa County18.8Montezuma County: 18.4 %Montezuma County18.4Delta County: 18.3 %Delta County18.3Moffat County: 18.1 %Moffat County18.1Lincoln County: 18 %Lincoln County18Prowers County: 17.7 %Prowers County17.7Otero County: 17.7 %Otero County17.7Phillips County: 17.3 %Phillips County17.3Morgan County: 17.1 %Morgan County17.1Lake County: 16.9 %Lake County16.9Gunnison County: 16.5 %Gunnison County16.5Adams County: 16.3 %Adams County16.3Eagle County: 16.2 %Eagle County16.2Costilla County: 16 %Costilla County16Routt County: 15.6 %Routt County15.6Mesa County: 15.4 %Mesa County15.4Kiowa County: 15.2 %Kiowa County15.2La Plata County: 14.9 %La Plata County14.9Rio Blanco County: 14.8 %Rio Blanco County14.8Weld County: 14.4 %Weld County14.4Mineral County: 52.6 %Mineral County52.6Ouray County: 39.3 %Ouray County39.3Grand County: 31.5 %Grand County31.5Bent County: 31.1 %Bent County31.1Clear Creek County: 29.6 %Clear Creek County29.6Jackson County: 28.1 %Jackson County28.1Garfield County: 26.5 %Garfield County26.5Montrose County: 25.7 %Montrose County25.7Rio Grande County: 22.2 %Rio Grande County22.2Chaffee County: 21.9 %Chaffee County21.9San Juan County: 21.7 %San Juan County21.7Archuleta County: 21.5 %Archuleta County21.5Conejos County: 20.9 %Conejos County20.9San Miguel County: 20.6 %San Miguel County20.6Las Animas County: 20.4 %Las Animas County20.4Fremont County: 19.9 %Fremont County19.9Summit County: 19.6 %Summit County19.6Saguache County: 19.6 %Saguache County19.6Dolores County: 19.4 %Dolores County19.4Park County: 19.2 %Park County19.2Alamosa County: 18.8 %Alamosa County18.8Montezuma County: 18.4 %Montezuma County18.4Delta County: 18.3 %Delta County18.3Moffat County: 18.1 %Moffat County18.1Lincoln County: 18 %Lincoln County18Prowers County: 17.7 %Prowers County17.7Otero County: 17.7 %Otero County17.7Phillips County: 17.3 %Phillips County17.3Morgan County: 17.1 %Morgan County17.1Lake County: 16.9 %Lake County16.9Gunnison County: 16.5 %Gunnison County16.5Adams County: 16.3 %Adams County16.3Eagle County: 16.2 %Eagle County16.2Costilla County: 16 %Costilla County16Routt County: 15.6 %Routt County15.6Mesa County: 15.4 %Mesa County15.4Kiowa County: 15.2 %Kiowa County15.2La Plata County: 14.9 %La Plata County14.9Rio Blanco County: 14.8 %Rio Blanco County14.8Weld County: 14.4 %Weld County14.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Mineral County52.6
2Ouray County39.3
3Grand County31.5
4Bent County31.1
5Clear Creek County29.6
6Jackson County28.1
7Garfield County26.5
8Montrose County25.7
9Rio Grande County22.2
10Chaffee County21.9
11San Juan County21.7
12Archuleta County21.5
13Conejos County20.9
14San Miguel County20.6
15Las Animas County20.4
16Fremont County19.9
17Summit County19.6
18Saguache County19.6
19Dolores County19.4
20Park County19.2
21Alamosa County18.8
22Montezuma County18.4
23Delta County18.3
24Moffat County18.1
25Lincoln County18
26Prowers County17.7
27Otero County17.7
28Phillips County17.3
29Morgan County17.1
30Lake County16.9
31Gunnison County16.5
32Adams County16.3
33Eagle County16.2
34Costilla County16
35Routt County15.6
36Mesa County15.4
37Kiowa County15.2
38La Plata County14.9
39Rio Blanco County14.8
40Weld County14.4
41Elbert County14.4
42Arapahoe County14.3
43Logan County14.2
44Huerfano County14.1
45Gilpin County14.1
46Crowley County13.7
47Baca County13.5
48El Paso County12.7
49Denver County12.6
50Custer County12.6
51Pueblo County12.4
52Broomfield County11.9
53Kit Carson County11.6
54Teller County11.3
55Yuma County10.8
56Larimer County9.2
57Jefferson County9.2
58Hinsdale County8.6
59Pitkin County8
60Douglas County7.2
61Boulder County7.2
62Sedgwick County6.7
63Washington County5.4
64Cheyenne County2.4

Other periods

About this ranking

People aged 19 to 34 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 19 to 34. 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs (Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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-ages-19-34/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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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-ages-19-34/colorado-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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-ages-19-34/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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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-ages-19-34/colorado-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS), 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-ages-19-34/colorado-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/colorado-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, 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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Rank Counties in Colorado by uninsured rate, ages 19 to 34 (US, ACS) using official data, and cite the source.
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Questions

Which county has the highest uninsured rate, ages 19 to 34 (US, ACS)?

Mineral County, with 52.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 19 to 34 (US, ACS)?

Cheyenne County, with 2.4% 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 aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 19 to 34 (US, ACS): other rankings

Counties in Colorado: more rankings