Data / Rankings / Uninsured rate, under 65 (US model-based estimate) / Counties in Oklahoma

Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate)

Harper County had the highest uninsured rate, under 65 (US model-based estimate) of 77 counties in 2018, at 24.1%. Canadian County had the lowest, at 13%. The median was 18.3% and the figure for Oklahoma was 16.6%. Source: the U.S. Census Bureau.

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Highest24.1Harper County
Lowest13Canadian County
Median18.377 counties
Oklahoma16.6History

Map of counties, 2018

Adair County: 22.8 %Alfalfa County: 18.7 %Atoka County: 20.2 %Beaver County: 21.3 %Beckham County: 17.1 %Blaine County: 16 %Bryan County: 19.5 %Caddo County: 18.3 %Canadian County: 13 %Carter County: 19.7 %Cherokee County: 22.8 %Choctaw County: 18.8 %Cimarron County: 22.7 %Cleveland County: 13.1 %Coal County: 20.4 %Comanche County: 13.9 %Cotton County: 16.5 %Craig County: 19.2 %Creek County: 15.6 %Custer County: 18.9 %Delaware County: 23.2 %Dewey County: 18.3 %Ellis County: 18.9 %Garfield County: 17.4 %Garvin County: 20.1 %Grady County: 14.7 %Grant County: 14.5 %Greer County: 13.7 %Harmon County: 22 %Harper County: 24.1 %Haskell County: 21.3 %Hughes County: 19.5 %Jackson County: 15.3 %Jefferson County: 20.5 %Johnston County: 18.9 %Kay County: 17 %Kingfisher County: 17.2 %Kiowa County: 16.7 %Latimer County: 17.7 %Le Flore County: 20.7 %Lincoln County: 17.5 %Logan County: 14.9 %Love County: 18.3 %McClain County: 15.5 %McCurtain County: 21.4 %McIntosh County: 21.4 %Major County: 17.1 %Marshall County: 22.9 %Mayes County: 18.6 %Murray County: 16.3 %Muskogee County: 19 %Noble County: 14.2 %Nowata County: 19 %Okfuskee County: 18.9 %Oklahoma County: 16.8 %Okmulgee County: 17.1 %Osage County: 15.7 %Ottawa County: 19.5 %Pawnee County: 16.6 %Payne County: 16.3 %Pittsburg County: 18.4 %Pontotoc County: 18.1 %Pottawatomie County: 15.5 %Pushmataha County: 21 %Roger Mills County: 19.5 %Rogers County: 14.2 %Seminole County: 19.6 %Sequoyah County: 20.6 %Stephens County: 17.3 %Texas County: 23.9 %Tillman County: 19.7 %Tulsa County: 15.7 %Wagoner County: 15.2 %Washington County: 16.4 %Washita County: 19 %Woods County: 14.6 %Woodward County: 17.8 %
  • Under 16
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  • 21 and over
%, 2018. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Harper County: 24.1 %Harper County24.1Texas County: 23.9 %Texas County23.9Delaware County: 23.2 %Delaware County23.2Marshall County: 22.9 %Marshall County22.9Adair County: 22.8 %Adair County22.8Cherokee County: 22.8 %Cherokee County22.8Cimarron County: 22.7 %Cimarron County22.7Harmon County: 22 %Harmon County22McCurtain County: 21.4 %McCurtain County21.4McIntosh County: 21.4 %McIntosh County21.4Beaver County: 21.3 %Beaver County21.3Haskell County: 21.3 %Haskell County21.3Pushmataha County: 21 %Pushmataha County21Le Flore County: 20.7 %Le Flore County20.7Sequoyah County: 20.6 %Sequoyah County20.6Jefferson County: 20.5 %Jefferson County20.5Coal County: 20.4 %Coal County20.4Atoka County: 20.2 %Atoka County20.2Garvin County: 20.1 %Garvin County20.1Carter County: 19.7 %Carter County19.7Tillman County: 19.7 %Tillman County19.7Seminole County: 19.6 %Seminole County19.6Bryan County: 19.5 %Bryan County19.5Hughes County: 19.5 %Hughes County19.5Ottawa County: 19.5 %Ottawa County19.5Roger Mills County: 19.5 %Roger Mills County19.5Craig County: 19.2 %Craig County19.2Muskogee County: 19 %Muskogee County19Nowata County: 19 %Nowata County19Washita County: 19 %Washita County19Custer County: 18.9 %Custer County18.9Ellis County: 18.9 %Ellis County18.9Johnston County: 18.9 %Johnston County18.9Okfuskee County: 18.9 %Okfuskee County18.9Choctaw County: 18.8 %Choctaw County18.8Alfalfa County: 18.7 %Alfalfa County18.7Mayes County: 18.6 %Mayes County18.6Pittsburg County: 18.4 %Pittsburg County18.4Caddo County: 18.3 %Caddo County18.3Dewey County: 18.3 %Dewey County18.3Harper County: 24.1 %Harper County24.1Texas County: 23.9 %Texas County23.9Delaware County: 23.2 %Delaware County23.2Marshall County: 22.9 %Marshall County22.9Adair County: 22.8 %Adair County22.8Cherokee County: 22.8 %Cherokee County22.8Cimarron County: 22.7 %Cimarron County22.7Harmon County: 22 %Harmon County22McCurtain County: 21.4 %McCurtain County21.4McIntosh County: 21.4 %McIntosh County21.4Beaver County: 21.3 %Beaver County21.3Haskell County: 21.3 %Haskell County21.3Pushmataha County: 21 %Pushmataha County21Le Flore County: 20.7 %Le Flore County20.7Sequoyah County: 20.6 %Sequoyah County20.6Jefferson County: 20.5 %Jefferson County20.5Coal County: 20.4 %Coal County20.4Atoka County: 20.2 %Atoka County20.2Garvin County: 20.1 %Garvin County20.1Carter County: 19.7 %Carter County19.7Tillman County: 19.7 %Tillman County19.7Seminole County: 19.6 %Seminole County19.6Bryan County: 19.5 %Bryan County19.5Hughes County: 19.5 %Hughes County19.5Ottawa County: 19.5 %Ottawa County19.5Roger Mills County: 19.5 %Roger Mills County19.5Craig County: 19.2 %Craig County19.2Muskogee County: 19 %Muskogee County19Nowata County: 19 %Nowata County19Washita County: 19 %Washita County19Custer County: 18.9 %Custer County18.9Ellis County: 18.9 %Ellis County18.9Johnston County: 18.9 %Johnston County18.9Okfuskee County: 18.9 %Okfuskee County18.9Choctaw County: 18.8 %Choctaw County18.8Alfalfa County: 18.7 %Alfalfa County18.7Mayes County: 18.6 %Mayes County18.6Pittsburg County: 18.4 %Pittsburg County18.4Caddo County: 18.3 %Caddo County18.3Dewey County: 18.3 %Dewey County18.3
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Harper County24.1-1.8 pts
2Texas County23.9+2.3 pts
3Delaware County23.2-0.7 pts
4Marshall County22.90 pts
5Adair County22.8-1.7 pts
5Cherokee County22.8-1.6 pts
7Cimarron County22.7-2.4 pts
8Harmon County22-2.2 pts
9McCurtain County21.4+0.1 pts
9McIntosh County21.4+0.7 pts
11Beaver County21.3+0.9 pts
11Haskell County21.3+0.3 pts
13Pushmataha County210 pts
14Le Flore County20.7+0.5 pts
15Sequoyah County20.6+0.3 pts
16Jefferson County20.5+0.5 pts
17Coal County20.4-0.9 pts
18Atoka County20.2-0.5 pts
19Garvin County20.1+1.4 pts
20Carter County19.7+1.9 pts
20Tillman County19.7-0.2 pts
22Seminole County19.6-0.1 pts
23Bryan County19.5-0.1 pts
23Hughes County19.5-0.9 pts
23Ottawa County19.50 pts
23Roger Mills County19.5+1 pts
27Craig County19.2-0.1 pts
28Muskogee County19-0.1 pts
28Nowata County19-1.6 pts
28Washita County19+1.5 pts
31Custer County18.9-1.4 pts
31Ellis County18.9-0.4 pts
31Johnston County18.9-1 pts
31Okfuskee County18.9-0.9 pts
35Choctaw County18.8-2.2 pts
36Alfalfa County18.7+0.5 pts
37Mayes County18.6-0.9 pts
38Pittsburg County18.4-1.4 pts
39Caddo County18.3-2 pts
39Dewey County18.3-1.9 pts
39Love County18.3+0.8 pts
42Pontotoc County18.1+0.4 pts
43Woodward County17.8+0.1 pts
44Latimer County17.7-1.8 pts
45Lincoln County17.5-1.2 pts
46Garfield County17.4-0.6 pts
47Stephens County17.3+0.9 pts
48Kingfisher County17.2-0.4 pts
49Beckham County17.1-0.5 pts
49Major County17.1-2.1 pts
49Okmulgee County17.1+0.6 pts
52Kay County17+1.4 pts
53Oklahoma County16.8+0.7 pts
54Kiowa County16.7-0.7 pts
55Pawnee County16.6-1 pts
56Cotton County16.5-1.6 pts
57Washington County16.40 pts
58Murray County16.3-1.1 pts
58Payne County16.3-0.1 pts
60Blaine County16-1.3 pts
61Osage County15.7-1 pts
61Tulsa County15.7+0.3 pts
63Creek County15.6-0.6 pts
64McClain County15.5+0.8 pts
64Pottawatomie County15.5-1.2 pts
66Jackson County15.3-1.3 pts
67Wagoner County15.2-0.4 pts
68Logan County14.9+1.4 pts
69Grady County14.7+0.1 pts
70Woods County14.6+0.5 pts
71Grant County14.5-1.8 pts
72Noble County14.2-0.9 pts
72Rogers County14.2+0.7 pts
74Comanche County13.9-1.1 pts
75Greer County13.7-0.1 pts
76Cleveland County13.1+0.4 pts
77Canadian County13+0.2 pts

Other periods

About this ranking

People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. 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. People 65 and over are left out because nearly all of them have Medicare.

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, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-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, under 65, all races, both sexes, all income levels, states and counties (Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_oklahoma_by_2018,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Oklahoma by uninsured rate, under 65 (US model-based estimate), 2018
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-2018-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/oklahoma-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, under 65 (US model-based estimate)?

Harper County, with 24.1% in 2018, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 65 (US model-based estimate)?

Canadian County, with 13% in 2018.

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, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 65 (US model-based estimate): other rankings

Counties in Oklahoma: more rankings