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 2016, at 20%. Douglas County had the lowest, at 4.3%. The median was 11.7% and the figure for Colorado was 10.2%. Source: the U.S. Census Bureau.

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Median11.764 counties
Colorado10.2History

Map of counties, 2016

Adams County: 14.9 %Alamosa County: 15.5 %Arapahoe County: 10 %Archuleta County: 15.2 %Baca County: 15.6 %Bent County: 15.2 %Boulder County: 8.3 %Broomfield County: 6 %Chaffee County: 9.7 %Cheyenne County: 14.4 %Clear Creek County: 6.6 %Conejos County: 11.1 %Costilla County: 17.5 %Crowley County: 9.8 %Custer County: 12.9 %Delta County: 12 %Denver County: 12.3 %Dolores County: 12.4 %Douglas County: 4.3 %Eagle County: 14.4 %Elbert County: 8 %El Paso County: 8.7 %Fremont County: 10 %Garfield County: 18.3 %Gilpin County: 4.9 %Grand County: 10.4 %Gunnison County: 11.4 %Hinsdale County: 12.8 %Huerfano County: 10 %Jackson County: 16.3 %Jefferson County: 7.8 %Kiowa County: 11.3 %Kit Carson County: 15.4 %Lake County: 14 %La Plata County: 11.6 %Larimer County: 8.3 %Las Animas County: 11.8 %Lincoln County: 11.5 %Logan County: 12.2 %Mesa County: 11.1 %Mineral County: 9.2 %Moffat County: 11.5 %Montezuma County: 15.7 %Montrose County: 14.7 %Morgan County: 14.6 %Otero County: 12.8 %Ouray County: 9.8 %Park County: 11 %Phillips County: 14.3 %Pitkin County: 12.6 %Prowers County: 15.8 %Pueblo County: 9.5 %Rio Blanco County: 10.6 %Rio Grande County: 14.4 %Routt County: 9.2 %Saguache County: 20 %San Juan County: 10.8 %San Miguel County: 12.1 %Sedgwick County: 12.7 %Summit County: 12.2 %Teller County: 8.5 %Washington County: 11.2 %Weld County: 10.6 %Yuma County: 14.3 %
  • Under 9.2
  • 9.2 to 11
  • 11 to 12
  • 12 to 13
  • 13 to 15
  • 15 and over
%, 2016. 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, 2016

Saguache County: 20 %Saguache County20Garfield County: 18.3 %Garfield County18.3Costilla County: 17.5 %Costilla County17.5Jackson County: 16.3 %Jackson County16.3Prowers County: 15.8 %Prowers County15.8Montezuma County: 15.7 %Montezuma County15.7Baca County: 15.6 %Baca County15.6Alamosa County: 15.5 %Alamosa County15.5Kit Carson County: 15.4 %Kit Carson County15.4Archuleta County: 15.2 %Archuleta County15.2Bent County: 15.2 %Bent County15.2Adams County: 14.9 %Adams County14.9Montrose County: 14.7 %Montrose County14.7Morgan County: 14.6 %Morgan County14.6Cheyenne County: 14.4 %Cheyenne County14.4Eagle County: 14.4 %Eagle County14.4Rio Grande County: 14.4 %Rio Grande County14.4Phillips County: 14.3 %Phillips County14.3Yuma County: 14.3 %Yuma County14.3Lake County: 14 %Lake County14Custer County: 12.9 %Custer County12.9Hinsdale County: 12.8 %Hinsdale County12.8Otero County: 12.8 %Otero County12.8Sedgwick County: 12.7 %Sedgwick County12.7Pitkin County: 12.6 %Pitkin County12.6Dolores County: 12.4 %Dolores County12.4Denver County: 12.3 %Denver County12.3Logan County: 12.2 %Logan County12.2Summit County: 12.2 %Summit County12.2San Miguel County: 12.1 %San Miguel County12.1Delta County: 12 %Delta County12Las Animas County: 11.8 %Las Animas County11.8La Plata County: 11.6 %La Plata County11.6Lincoln County: 11.5 %Lincoln County11.5Moffat County: 11.5 %Moffat County11.5Gunnison County: 11.4 %Gunnison County11.4Kiowa County: 11.3 %Kiowa County11.3Washington County: 11.2 %Washington County11.2Conejos County: 11.1 %Conejos County11.1Mesa County: 11.1 %Mesa County11.1Saguache County: 20 %Saguache County20Garfield County: 18.3 %Garfield County18.3Costilla County: 17.5 %Costilla County17.5Jackson County: 16.3 %Jackson County16.3Prowers County: 15.8 %Prowers County15.8Montezuma County: 15.7 %Montezuma County15.7Baca County: 15.6 %Baca County15.6Alamosa County: 15.5 %Alamosa County15.5Kit Carson County: 15.4 %Kit Carson County15.4Archuleta County: 15.2 %Archuleta County15.2Bent County: 15.2 %Bent County15.2Adams County: 14.9 %Adams County14.9Montrose County: 14.7 %Montrose County14.7Morgan County: 14.6 %Morgan County14.6Cheyenne County: 14.4 %Cheyenne County14.4Eagle County: 14.4 %Eagle County14.4Rio Grande County: 14.4 %Rio Grande County14.4Phillips County: 14.3 %Phillips County14.3Yuma County: 14.3 %Yuma County14.3Lake County: 14 %Lake County14Custer County: 12.9 %Custer County12.9Hinsdale County: 12.8 %Hinsdale County12.8Otero County: 12.8 %Otero County12.8Sedgwick County: 12.7 %Sedgwick County12.7Pitkin County: 12.6 %Pitkin County12.6Dolores County: 12.4 %Dolores County12.4Denver County: 12.3 %Denver County12.3Logan County: 12.2 %Logan County12.2Summit County: 12.2 %Summit County12.2San Miguel County: 12.1 %San Miguel County12.1Delta County: 12 %Delta County12Las Animas County: 11.8 %Las Animas County11.8La Plata County: 11.6 %La Plata County11.6Lincoln County: 11.5 %Lincoln County11.5Moffat County: 11.5 %Moffat County11.5Gunnison County: 11.4 %Gunnison County11.4Kiowa County: 11.3 %Kiowa County11.3Washington County: 11.2 %Washington County11.2Conejos County: 11.1 %Conejos County11.1Mesa County: 11.1 %Mesa 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

RankCounties2016 (%)Change on 2015
1Saguache County20-2.7 pts
2Garfield County18.3-0.9 pts
3Costilla County17.5-0.8 pts
4Jackson County16.3-1.8 pts
5Prowers County15.8-1.1 pts
6Montezuma County15.7-1.7 pts
7Baca County15.6+0.4 pts
8Alamosa County15.5-0.2 pts
9Kit Carson County15.4-1.3 pts
10Archuleta County15.2+0.4 pts
10Bent County15.2+2.6 pts
12Adams County14.9-1.1 pts
13Montrose County14.7-1 pts
14Morgan County14.6-0.8 pts
15Cheyenne County14.4-3 pts
15Eagle County14.4-1.5 pts
15Rio Grande County14.4-0.7 pts
18Phillips County14.3-2.4 pts
18Yuma County14.3-0.3 pts
20Lake County14+0.6 pts
21Custer County12.9-1.5 pts
22Hinsdale County12.8+0.2 pts
22Otero County12.8-2.3 pts
24Sedgwick County12.7+0.1 pts
25Pitkin County12.6+0.5 pts
26Dolores County12.4-1.5 pts
27Denver County12.3-2.1 pts
28Logan County12.2-0.8 pts
28Summit County12.2-0.8 pts
30San Miguel County12.1+0.5 pts
31Delta County12-1.2 pts
32Las Animas County11.8-0.8 pts
33La Plata County11.60 pts
34Lincoln County11.5+1.2 pts
34Moffat County11.5-0.5 pts
36Gunnison County11.4-1.7 pts
37Kiowa County11.3-2.1 pts
38Washington County11.2-0.8 pts
39Conejos County11.1-2.2 pts
39Mesa County11.1-1.7 pts
41Park County11+1.7 pts
42San Juan County10.8-1.9 pts
43Rio Blanco County10.6-0.3 pts
43Weld County10.6+0.4 pts
45Grand County10.4+0.4 pts
46Arapahoe County10-1.3 pts
46Fremont County10-1.4 pts
46Huerfano County10-1.6 pts
49Crowley County9.8-1.6 pts
49Ouray County9.8-0.9 pts
51Chaffee County9.7-1.5 pts
52Pueblo County9.5-1.8 pts
53Mineral County9.2-1.9 pts
53Routt County9.2+0.2 pts
55El Paso County8.7-1.2 pts
56Teller County8.5-0.2 pts
57Boulder County8.3-0.1 pts
57Larimer County8.3+0.2 pts
59Elbert County80 pts
60Jefferson County7.8-0.4 pts
61Clear Creek County6.6-0.1 pts
62Broomfield County6+0.3 pts
63Gilpin County4.9+0.3 pts
64Douglas County4.3+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-2016-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), 2016) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-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), 2016. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016. 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), 2016. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016.

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), 2016 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2016,
  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), 2016}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016. 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-2016-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), 2016
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-2016-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2016.
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-2016-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% in 2016, 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 4.3% in 2016.

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