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)

Saguache County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 64 counties in 2019, at 20.6%. Gilpin County had the lowest, at 4.2%. The median was 12.7% and the figure for Colorado was 10.8%. Source: the U.S. Census Bureau.

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Highest20.6Saguache County
Lowest4.2Gilpin County
Median12.764 counties
Colorado10.8History

Map of counties, 2019

Adams County: 15 %Alamosa County: 15.6 %Arapahoe County: 11 %Archuleta County: 15.2 %Baca County: 16.4 %Bent County: 12.7 %Boulder County: 8.4 %Broomfield County: 6 %Chaffee County: 12.3 %Cheyenne County: 14.8 %Clear Creek County: 7.5 %Conejos County: 12.9 %Costilla County: 17.7 %Crowley County: 14.6 %Custer County: 13.4 %Delta County: 13.2 %Denver County: 11.5 %Dolores County: 11.5 %Douglas County: 4.9 %Eagle County: 14.9 %Elbert County: 7.4 %El Paso County: 10.5 %Fremont County: 10.5 %Garfield County: 18.3 %Gilpin County: 4.2 %Grand County: 11.9 %Gunnison County: 10.8 %Hinsdale County: 12.8 %Huerfano County: 9.8 %Jackson County: 16.1 %Jefferson County: 8.3 %Kiowa County: 11.1 %Kit Carson County: 16.3 %Lake County: 16.5 %La Plata County: 12.5 %Larimer County: 8.7 %Las Animas County: 15.2 %Lincoln County: 10.9 %Logan County: 12.7 %Mesa County: 12.6 %Mineral County: 11 %Moffat County: 11.5 %Montezuma County: 15.9 %Montrose County: 14.6 %Morgan County: 17.3 %Otero County: 13.2 %Ouray County: 8.8 %Park County: 9.1 %Phillips County: 14.8 %Pitkin County: 10.7 %Prowers County: 17.7 %Pueblo County: 11.7 %Rio Blanco County: 10.3 %Rio Grande County: 16.5 %Routt County: 10.4 %Saguache County: 20.6 %San Juan County: 13.2 %San Miguel County: 12.9 %Sedgwick County: 13.4 %Summit County: 13.2 %Teller County: 8.6 %Washington County: 11.3 %Weld County: 12.9 %Yuma County: 17.5 %
  • Under 9.4
  • 9.4 to 11
  • 11 to 13
  • 13 to 16
  • 16 and over
%, 2019. 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, 2019

Saguache County: 20.6 %Saguache County20.6Garfield County: 18.3 %Garfield County18.3Costilla County: 17.7 %Costilla County17.7Prowers County: 17.7 %Prowers County17.7Yuma County: 17.5 %Yuma County17.5Morgan County: 17.3 %Morgan County17.3Lake County: 16.5 %Lake County16.5Rio Grande County: 16.5 %Rio Grande County16.5Baca County: 16.4 %Baca County16.4Kit Carson County: 16.3 %Kit Carson County16.3Jackson County: 16.1 %Jackson County16.1Montezuma County: 15.9 %Montezuma County15.9Alamosa County: 15.6 %Alamosa County15.6Archuleta County: 15.2 %Archuleta County15.2Las Animas County: 15.2 %Las Animas County15.2Adams County: 15 %Adams County15Eagle County: 14.9 %Eagle County14.9Cheyenne County: 14.8 %Cheyenne County14.8Phillips County: 14.8 %Phillips County14.8Crowley County: 14.6 %Crowley County14.6Montrose County: 14.6 %Montrose County14.6Custer County: 13.4 %Custer County13.4Sedgwick County: 13.4 %Sedgwick County13.4Delta County: 13.2 %Delta County13.2Otero County: 13.2 %Otero County13.2San Juan County: 13.2 %San Juan County13.2Summit County: 13.2 %Summit County13.2Conejos County: 12.9 %Conejos County12.9San Miguel County: 12.9 %San Miguel County12.9Weld County: 12.9 %Weld County12.9Hinsdale County: 12.8 %Hinsdale County12.8Bent County: 12.7 %Bent County12.7Logan County: 12.7 %Logan County12.7Mesa County: 12.6 %Mesa County12.6La Plata County: 12.5 %La Plata County12.5Chaffee County: 12.3 %Chaffee County12.3Grand County: 11.9 %Grand County11.9Pueblo County: 11.7 %Pueblo County11.7Denver County: 11.5 %Denver County11.5Dolores County: 11.5 %Dolores County11.5Saguache County: 20.6 %Saguache County20.6Garfield County: 18.3 %Garfield County18.3Costilla County: 17.7 %Costilla County17.7Prowers County: 17.7 %Prowers County17.7Yuma County: 17.5 %Yuma County17.5Morgan County: 17.3 %Morgan County17.3Lake County: 16.5 %Lake County16.5Rio Grande County: 16.5 %Rio Grande County16.5Baca County: 16.4 %Baca County16.4Kit Carson County: 16.3 %Kit Carson County16.3Jackson County: 16.1 %Jackson County16.1Montezuma County: 15.9 %Montezuma County15.9Alamosa County: 15.6 %Alamosa County15.6Archuleta County: 15.2 %Archuleta County15.2Las Animas County: 15.2 %Las Animas County15.2Adams County: 15 %Adams County15Eagle County: 14.9 %Eagle County14.9Cheyenne County: 14.8 %Cheyenne County14.8Phillips County: 14.8 %Phillips County14.8Crowley County: 14.6 %Crowley County14.6Montrose County: 14.6 %Montrose County14.6Custer County: 13.4 %Custer County13.4Sedgwick County: 13.4 %Sedgwick County13.4Delta County: 13.2 %Delta County13.2Otero County: 13.2 %Otero County13.2San Juan County: 13.2 %San Juan County13.2Summit County: 13.2 %Summit County13.2Conejos County: 12.9 %Conejos County12.9San Miguel County: 12.9 %San Miguel County12.9Weld County: 12.9 %Weld County12.9Hinsdale County: 12.8 %Hinsdale County12.8Bent County: 12.7 %Bent County12.7Logan County: 12.7 %Logan County12.7Mesa County: 12.6 %Mesa County12.6La Plata County: 12.5 %La Plata County12.5Chaffee County: 12.3 %Chaffee County12.3Grand County: 11.9 %Grand County11.9Pueblo County: 11.7 %Pueblo County11.7Denver County: 11.5 %Denver County11.5Dolores County: 11.5 %Dolores County11.5
%. 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

RankCounties2019 (%)Change on 2018
1Saguache County20.6+0.3 pts
2Garfield County18.3+1.5 pts
3Costilla County17.7+0.7 pts
3Prowers County17.7+0.4 pts
5Yuma County17.5+0.1 pts
6Morgan County17.3+1.6 pts
7Lake County16.5+0.6 pts
7Rio Grande County16.5-0.5 pts
9Baca County16.4+0.3 pts
10Kit Carson County16.3-0.2 pts
11Jackson County16.1+0.9 pts
12Montezuma County15.9+0.4 pts
13Alamosa County15.6-1.2 pts
14Archuleta County15.20 pts
14Las Animas County15.2+0.3 pts
16Adams County15+2.1 pts
17Eagle County14.9+0.7 pts
18Cheyenne County14.8+0.5 pts
18Phillips County14.8-0.8 pts
20Crowley County14.6+0.6 pts
20Montrose County14.6+0.7 pts
22Custer County13.4+1 pts
22Sedgwick County13.40 pts
24Delta County13.2+0.3 pts
24Otero County13.2+0.3 pts
24San Juan County13.2+2.5 pts
24Summit County13.2-0.1 pts
28Conejos County12.9-0.1 pts
28San Miguel County12.9-0.4 pts
28Weld County12.9+1.6 pts
31Hinsdale County12.8+1.1 pts
32Bent County12.7+0.1 pts
32Logan County12.7+1.3 pts
34Mesa County12.6+0.5 pts
35La Plata County12.5+0.9 pts
36Chaffee County12.30 pts
37Grand County11.9+0.7 pts
38Pueblo County11.7+0.7 pts
39Denver County11.5-0.5 pts
39Dolores County11.5-0.6 pts
39Moffat County11.50 pts
42Washington County11.3+0.9 pts
43Kiowa County11.1+1.2 pts
44Arapahoe County11+0.6 pts
44Mineral County11-0.1 pts
46Lincoln County10.9+0.4 pts
47Gunnison County10.8-1.5 pts
48Pitkin County10.7-1.7 pts
49El Paso County10.5+0.4 pts
49Fremont County10.5+0.5 pts
51Routt County10.4+0.3 pts
52Rio Blanco County10.3+0.8 pts
53Huerfano County9.8+0.5 pts
54Park County9.1-0.5 pts
55Ouray County8.8-0.5 pts
56Larimer County8.7+0.7 pts
57Teller County8.6+0.1 pts
58Boulder County8.4-0.1 pts
59Jefferson County8.3+0.8 pts
60Clear Creek County7.5+0.3 pts
61Elbert County7.4-0.5 pts
62Broomfield County60 pts
63Douglas County4.9+0.4 pts
64Gilpin County4.2+0.2 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-2019-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), 2019) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-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), 2019. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019. 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), 2019. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019.

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), 2019 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2019,
  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), 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019. 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-2019-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), 2019
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-2019-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2019.
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-2019-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)?

Saguache County, with 20.6% in 2019, according to the U.S. Census Bureau.

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

Gilpin County, with 4.2% in 2019.

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