Data / Rankings / Uninsured rate, under 19 (US, ACS) / Counties in Colorado

Counties in Colorado by uninsured rate, under 19 (US, ACS)

Custer County had the highest uninsured rate, under 19 (US, ACS) of 64 counties in 2021, at 24.8%. San Juan County had the lowest, at 0%. The median was 5.6% and the figure for Colorado was 5%. Source: the U.S. Census Bureau.

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Highest24.8Custer County
Lowest0San Juan County
Median5.664 counties
Colorado5History

Map of counties, 2021

Adams County: 5.5 %Alamosa County: 8.8 %Arapahoe County: 5.5 %Archuleta County: 9.6 %Baca County: 3.5 %Bent County: 4.3 %Boulder County: 2.3 %Broomfield County: 3.7 %Chaffee County: 0.8 %Cheyenne County: 6.3 %Clear Creek County: 7 %Conejos County: 8.9 %Costilla County: 2.4 %Crowley County: 2.7 %Custer County: 24.8 %Delta County: 4.5 %Denver County: 5.5 %Dolores County: 3.1 %Douglas County: 2.7 %Eagle County: 5.3 %Elbert County: 5 %El Paso County: 4.7 %Fremont County: 5.8 %Garfield County: 10.9 %Gilpin County: 3.5 %Grand County: 4.3 %Gunnison County: 1.8 %Hinsdale County: 9.7 %Huerfano County: 8.3 %Jackson County: 10.9 %Jefferson County: 3.5 %Kiowa County: 2.6 %Kit Carson County: 12.3 %Lake County: 8.6 %La Plata County: 8.6 %Larimer County: 4.4 %Las Animas County: 5.7 %Lincoln County: 7.9 %Logan County: 2.9 %Mesa County: 6 %Mineral County: 9.3 %Moffat County: 6.9 %Montezuma County: 18.2 %Montrose County: 12.6 %Morgan County: 10 %Otero County: 6.1 %Ouray County: 7.6 %Park County: 5 %Phillips County: 6.6 %Pitkin County: 7 %Prowers County: 2.8 %Pueblo County: 3.5 %Rio Blanco County: 10.4 %Rio Grande County: 10.6 %Routt County: 6.3 %Saguache County: 4.5 %San Juan County: 0 %San Miguel County: 4 %Sedgwick County: 1.7 %Summit County: 9.6 %Teller County: 5.9 %Washington County: 3.7 %Weld County: 4.7 %Yuma County: 13.3 %
  • Under 3
  • 3 to 4.4
  • 4.4 to 5.6
  • 5.6 to 7
  • 7 to 9.7
  • 9.7 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

Custer County: 24.8 %Custer County24.8Montezuma County: 18.2 %Montezuma County18.2Yuma County: 13.3 %Yuma County13.3Montrose County: 12.6 %Montrose County12.6Kit Carson County: 12.3 %Kit Carson County12.3Garfield County: 10.9 %Garfield County10.9Jackson County: 10.9 %Jackson County10.9Rio Grande County: 10.6 %Rio Grande County10.6Rio Blanco County: 10.4 %Rio Blanco County10.4Morgan County: 10 %Morgan County10Hinsdale County: 9.7 %Hinsdale County9.7Summit County: 9.6 %Summit County9.6Archuleta County: 9.6 %Archuleta County9.6Mineral County: 9.3 %Mineral County9.3Conejos County: 8.9 %Conejos County8.9Alamosa County: 8.8 %Alamosa County8.8Lake County: 8.6 %Lake County8.6La Plata County: 8.6 %La Plata County8.6Huerfano County: 8.3 %Huerfano County8.3Lincoln County: 7.9 %Lincoln County7.9Ouray County: 7.6 %Ouray County7.6Clear Creek County: 7 %Clear Creek County7Pitkin County: 7 %Pitkin County7Moffat County: 6.9 %Moffat County6.9Phillips County: 6.6 %Phillips County6.6Routt County: 6.3 %Routt County6.3Cheyenne County: 6.3 %Cheyenne County6.3Otero County: 6.1 %Otero County6.1Mesa County: 6 %Mesa County6Teller County: 5.9 %Teller County5.9Fremont County: 5.8 %Fremont County5.8Las Animas County: 5.7 %Las Animas County5.7Arapahoe County: 5.5 %Arapahoe County5.5Adams County: 5.5 %Adams County5.5Denver County: 5.5 %Denver County5.5Eagle County: 5.3 %Eagle County5.3Elbert County: 5 %Elbert County5Park County: 5 %Park County5Weld County: 4.7 %Weld County4.7El Paso County: 4.7 %El Paso County4.7Custer County: 24.8 %Custer County24.8Montezuma County: 18.2 %Montezuma County18.2Yuma County: 13.3 %Yuma County13.3Montrose County: 12.6 %Montrose County12.6Kit Carson County: 12.3 %Kit Carson County12.3Garfield County: 10.9 %Garfield County10.9Jackson County: 10.9 %Jackson County10.9Rio Grande County: 10.6 %Rio Grande County10.6Rio Blanco County: 10.4 %Rio Blanco County10.4Morgan County: 10 %Morgan County10Hinsdale County: 9.7 %Hinsdale County9.7Summit County: 9.6 %Summit County9.6Archuleta County: 9.6 %Archuleta County9.6Mineral County: 9.3 %Mineral County9.3Conejos County: 8.9 %Conejos County8.9Alamosa County: 8.8 %Alamosa County8.8Lake County: 8.6 %Lake County8.6La Plata County: 8.6 %La Plata County8.6Huerfano County: 8.3 %Huerfano County8.3Lincoln County: 7.9 %Lincoln County7.9Ouray County: 7.6 %Ouray County7.6Clear Creek County: 7 %Clear Creek County7Pitkin County: 7 %Pitkin County7Moffat County: 6.9 %Moffat County6.9Phillips County: 6.6 %Phillips County6.6Routt County: 6.3 %Routt County6.3Cheyenne County: 6.3 %Cheyenne County6.3Otero County: 6.1 %Otero County6.1Mesa County: 6 %Mesa County6Teller County: 5.9 %Teller County5.9Fremont County: 5.8 %Fremont County5.8Las Animas County: 5.7 %Las Animas County5.7Arapahoe County: 5.5 %Arapahoe County5.5Adams County: 5.5 %Adams County5.5Denver County: 5.5 %Denver County5.5Eagle County: 5.3 %Eagle County5.3Elbert County: 5 %Elbert County5Park County: 5 %Park County5Weld County: 4.7 %Weld County4.7El Paso County: 4.7 %El Paso County4.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Custer County24.8
2Montezuma County18.2
3Yuma County13.3
4Montrose County12.6
5Kit Carson County12.3
6Garfield County10.9
7Jackson County10.9
8Rio Grande County10.6
9Rio Blanco County10.4
10Morgan County10
11Hinsdale County9.7
12Summit County9.6
13Archuleta County9.6
14Mineral County9.3
15Conejos County8.9
16Alamosa County8.8
17Lake County8.6
18La Plata County8.6
19Huerfano County8.3
20Lincoln County7.9
21Ouray County7.6
22Clear Creek County7
23Pitkin County7
24Moffat County6.9
25Phillips County6.6
26Routt County6.3
27Cheyenne County6.3
28Otero County6.1
29Mesa County6
30Teller County5.9
31Fremont County5.8
32Las Animas County5.7
33Arapahoe County5.5
34Adams County5.5
35Denver County5.5
36Eagle County5.3
37Elbert County5
38Park County5
39Weld County4.7
40El Paso County4.7
41Delta County4.5
42Saguache County4.5
43Larimer County4.4
44Bent County4.3
45Grand County4.3
46San Miguel County4
47Broomfield County3.7
47Washington County3.7
49Baca County3.5
49Jefferson County3.5
51Gilpin County3.5
52Pueblo County3.5
53Dolores County3.1
54Logan County2.9
55Prowers County2.8
56Crowley County2.7
57Douglas County2.7
58Kiowa County2.6
59Costilla County2.4
60Boulder County2.3
61Gunnison County1.8
62Sedgwick County1.7
63Chaffee County0.8
64San Juan County0

Other periods

About this ranking

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

Harvard

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

Which county has the highest uninsured rate, under 19 (US, ACS)?

Custer County, with 24.8% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US, ACS)?

San Juan County, with 0% 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 under 19 with no health insurance coverage as a percentage of the civilian noninstitutionalized population under 19, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, under 19 (US, ACS): other rankings

Counties in Colorado: more rankings