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)

Costilla County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 64 counties in 2013, at 34.4%. Douglas County had the lowest, at 9.2%. The median was 22.1% and the figure for Colorado was 18.8%. Source: the U.S. Census Bureau.

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Highest34.4Costilla County
Lowest9.2Douglas County
Median22.164 counties
Colorado18.8History

Map of counties, 2013

Adams County: 25.6 %Alamosa County: 23.1 %Arapahoe County: 19.5 %Archuleta County: 26.5 %Baca County: 30.5 %Bent County: 20.6 %Boulder County: 15.8 %Broomfield County: 12.4 %Chaffee County: 20.4 %Cheyenne County: 26.9 %Clear Creek County: 13.6 %Conejos County: 23.9 %Costilla County: 34.4 %Crowley County: 22.8 %Custer County: 24.5 %Delta County: 25 %Denver County: 21.3 %Dolores County: 27 %Douglas County: 9.2 %Eagle County: 25.4 %Elbert County: 14.5 %El Paso County: 16.3 %Fremont County: 19.8 %Garfield County: 27.3 %Gilpin County: 10.1 %Grand County: 20.6 %Gunnison County: 26.5 %Hinsdale County: 20.4 %Huerfano County: 23.6 %Jackson County: 26 %Jefferson County: 14.8 %Kiowa County: 21.7 %Kit Carson County: 28 %Lake County: 29.4 %La Plata County: 20.6 %Larimer County: 16.3 %Las Animas County: 21.6 %Lincoln County: 20.8 %Logan County: 22.3 %Mesa County: 20.6 %Mineral County: 17.4 %Moffat County: 20.9 %Montezuma County: 26.2 %Montrose County: 26.2 %Morgan County: 24.5 %Otero County: 22 %Ouray County: 22.1 %Park County: 19 %Phillips County: 25.5 %Pitkin County: 19.3 %Prowers County: 26.7 %Pueblo County: 18.8 %Rio Blanco County: 18.5 %Rio Grande County: 25.1 %Routt County: 17.5 %Saguache County: 34.3 %San Juan County: 25 %San Miguel County: 24.6 %Sedgwick County: 23.1 %Summit County: 22.9 %Teller County: 16.3 %Washington County: 21.1 %Weld County: 20.4 %Yuma County: 27 %
  • Under 17
  • 17 to 21
  • 21 to 22
  • 22 to 25
  • 25 to 27
  • 27 and over
%, 2013. 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, 2013

Costilla County: 34.4 %Costilla County34.4Saguache County: 34.3 %Saguache County34.3Baca County: 30.5 %Baca County30.5Lake County: 29.4 %Lake County29.4Kit Carson County: 28 %Kit Carson County28Garfield County: 27.3 %Garfield County27.3Dolores County: 27 %Dolores County27Yuma County: 27 %Yuma County27Cheyenne County: 26.9 %Cheyenne County26.9Prowers County: 26.7 %Prowers County26.7Archuleta County: 26.5 %Archuleta County26.5Gunnison County: 26.5 %Gunnison County26.5Montezuma County: 26.2 %Montezuma County26.2Montrose County: 26.2 %Montrose County26.2Jackson County: 26 %Jackson County26Adams County: 25.6 %Adams County25.6Phillips County: 25.5 %Phillips County25.5Eagle County: 25.4 %Eagle County25.4Rio Grande County: 25.1 %Rio Grande County25.1Delta County: 25 %Delta County25San Juan County: 25 %San Juan County25San Miguel County: 24.6 %San Miguel County24.6Custer County: 24.5 %Custer County24.5Morgan County: 24.5 %Morgan County24.5Conejos County: 23.9 %Conejos County23.9Huerfano County: 23.6 %Huerfano County23.6Alamosa County: 23.1 %Alamosa County23.1Sedgwick County: 23.1 %Sedgwick County23.1Summit County: 22.9 %Summit County22.9Crowley County: 22.8 %Crowley County22.8Logan County: 22.3 %Logan County22.3Ouray County: 22.1 %Ouray County22.1Otero County: 22 %Otero County22Kiowa County: 21.7 %Kiowa County21.7Las Animas County: 21.6 %Las Animas County21.6Denver County: 21.3 %Denver County21.3Washington County: 21.1 %Washington County21.1Moffat County: 20.9 %Moffat County20.9Lincoln County: 20.8 %Lincoln County20.8Bent County: 20.6 %Bent County20.6Costilla County: 34.4 %Costilla County34.4Saguache County: 34.3 %Saguache County34.3Baca County: 30.5 %Baca County30.5Lake County: 29.4 %Lake County29.4Kit Carson County: 28 %Kit Carson County28Garfield County: 27.3 %Garfield County27.3Dolores County: 27 %Dolores County27Yuma County: 27 %Yuma County27Cheyenne County: 26.9 %Cheyenne County26.9Prowers County: 26.7 %Prowers County26.7Archuleta County: 26.5 %Archuleta County26.5Gunnison County: 26.5 %Gunnison County26.5Montezuma County: 26.2 %Montezuma County26.2Montrose County: 26.2 %Montrose County26.2Jackson County: 26 %Jackson County26Adams County: 25.6 %Adams County25.6Phillips County: 25.5 %Phillips County25.5Eagle County: 25.4 %Eagle County25.4Rio Grande County: 25.1 %Rio Grande County25.1Delta County: 25 %Delta County25San Juan County: 25 %San Juan County25San Miguel County: 24.6 %San Miguel County24.6Custer County: 24.5 %Custer County24.5Morgan County: 24.5 %Morgan County24.5Conejos County: 23.9 %Conejos County23.9Huerfano County: 23.6 %Huerfano County23.6Alamosa County: 23.1 %Alamosa County23.1Sedgwick County: 23.1 %Sedgwick County23.1Summit County: 22.9 %Summit County22.9Crowley County: 22.8 %Crowley County22.8Logan County: 22.3 %Logan County22.3Ouray County: 22.1 %Ouray County22.1Otero County: 22 %Otero County22Kiowa County: 21.7 %Kiowa County21.7Las Animas County: 21.6 %Las Animas County21.6Denver County: 21.3 %Denver County21.3Washington County: 21.1 %Washington County21.1Moffat County: 20.9 %Moffat County20.9Lincoln County: 20.8 %Lincoln County20.8Bent County: 20.6 %Bent County20.6
%. 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

RankCounties2013 (%)Change on 2012
1Costilla County34.4+2.2 pts
2Saguache County34.3-0.5 pts
3Baca County30.5+6.2 pts
4Lake County29.4-0.5 pts
5Kit Carson County28+2.9 pts
6Garfield County27.3-0.2 pts
7Dolores County27+0.6 pts
7Yuma County27-0.4 pts
9Cheyenne County26.9+0.5 pts
10Prowers County26.7+0.9 pts
11Archuleta County26.5+3 pts
11Gunnison County26.5+3 pts
13Montezuma County26.2+0.2 pts
13Montrose County26.2+1.1 pts
15Jackson County26-0.3 pts
16Adams County25.6-0.9 pts
17Phillips County25.5+1.1 pts
18Eagle County25.4+0.3 pts
19Rio Grande County25.1+0.1 pts
20Delta County25-0.4 pts
20San Juan County25-1 pts
22San Miguel County24.6+0.9 pts
23Custer County24.5+2.1 pts
23Morgan County24.5-2.1 pts
25Conejos County23.9-0.5 pts
26Huerfano County23.6-0.7 pts
27Alamosa County23.1+1.1 pts
27Sedgwick County23.1-1 pts
29Summit County22.9+1.4 pts
30Crowley County22.8+1.6 pts
31Logan County22.3+0.8 pts
32Ouray County22.1+0.7 pts
33Otero County22-1.4 pts
34Kiowa County21.7+1.8 pts
35Las Animas County21.6+1.1 pts
36Denver County21.3-1 pts
37Washington County21.1-2.1 pts
38Moffat County20.9+0.2 pts
39Lincoln County20.8+1 pts
40Bent County20.60 pts
40Grand County20.6+0.6 pts
40La Plata County20.6-1.7 pts
40Mesa County20.6+0.3 pts
44Chaffee County20.4-0.4 pts
44Hinsdale County20.4-1.6 pts
44Weld County20.4-1.8 pts
47Fremont County19.8+0.7 pts
48Arapahoe County19.5-1.2 pts
49Pitkin County19.30 pts
50Park County19-0.6 pts
51Pueblo County18.8-0.6 pts
52Rio Blanco County18.5-0.3 pts
53Routt County17.5+0.2 pts
54Mineral County17.4-2.8 pts
55El Paso County16.3-1.8 pts
55Larimer County16.3-0.9 pts
55Teller County16.3+0.3 pts
58Boulder County15.8+0.4 pts
59Jefferson County14.8-0.4 pts
60Elbert County14.5+0.5 pts
61Clear Creek County13.6+0.1 pts
62Broomfield County12.4+0.2 pts
63Gilpin County10.1-1.4 pts
64Douglas County9.2+0.1 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-2013-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), 2013) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-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), 2013. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013. 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), 2013. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013.

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), 2013 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2013,
  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), 2013}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013. 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-2013-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), 2013
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-2013-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/colorado-counties?period=2013.
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-2013-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)?

Costilla County, with 34.4% in 2013, 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 9.2% in 2013.

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