Data / Rankings / Uninsured rate, all ages (US) / Counties in North Dakota

Counties in North Dakota by uninsured rate, all ages (US)

Sioux County had the highest uninsured rate, all ages (US) of 53 counties in 2021, at 33.3%. Golden Valley County had the lowest, at 2.2%. The median was 6.5% and the figure for North Dakota was 7.5%. Source: the U.S. Census Bureau.

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Highest33.3Sioux County
Lowest2.2Golden Valley County
Median6.553 counties
North Dakota7.5History

Map of counties, 2021

Adams County: 9.4 %Barnes County: 5.9 %Benson County: 7.6 %Billings County: 5.6 %Bottineau County: 6.5 %Bowman County: 7.6 %Burke County: 5.2 %Burleigh County: 5.1 %Cass County: 6 %Cavalier County: 7.4 %Dickey County: 4.9 %Divide County: 8.2 %Dunn County: 19.7 %Eddy County: 7.5 %Emmons County: 6.6 %Foster County: 3.4 %Golden Valley County: 2.2 %Grand Forks County: 6.3 %Grant County: 5.1 %Griggs County: 4.1 %Hettinger County: 9.8 %Kidder County: 11.9 %LaMoure County: 5.2 %Logan County: 2.5 %McHenry County: 4.2 %McIntosh County: 6.8 %McKenzie County: 17.9 %McLean County: 4.7 %Mercer County: 12.7 %Morton County: 5.3 %Mountrail County: 17 %Nelson County: 7.3 %Oliver County: 6.3 %Pembina County: 6.8 %Pierce County: 6.1 %Ramsey County: 8.9 %Ransom County: 4.6 %Renville County: 5.2 %Richland County: 5.8 %Rolette County: 27.8 %Sargent County: 2.8 %Sheridan County: 9.5 %Sioux County: 33.3 %Slope County: 2.3 %Stark County: 9 %Steele County: 5.5 %Stutsman County: 8.1 %Towner County: 9.6 %Traill County: 6.4 %Walsh County: 6.7 %Ward County: 6.6 %Wells County: 5.7 %Williams County: 13.3 %
  • Under 4.8
  • 4.8 to 5.6
  • 5.6 to 6.5
  • 6.5 to 7.5
  • 7.5 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.

All counties, 2021

Sioux County: 33.3 %Sioux County33.3Rolette County: 27.8 %Rolette County27.8Dunn County: 19.7 %Dunn County19.7McKenzie County: 17.9 %McKenzie County17.9Mountrail County: 17 %Mountrail County17Williams County: 13.3 %Williams County13.3Mercer County: 12.7 %Mercer County12.7Kidder County: 11.9 %Kidder County11.9Hettinger County: 9.8 %Hettinger County9.8Towner County: 9.6 %Towner County9.6Sheridan County: 9.5 %Sheridan County9.5Adams County: 9.4 %Adams County9.4Stark County: 9 %Stark County9Ramsey County: 8.9 %Ramsey County8.9Divide County: 8.2 %Divide County8.2Stutsman County: 8.1 %Stutsman County8.1Benson County: 7.6 %Benson County7.6Bowman County: 7.6 %Bowman County7.6Eddy County: 7.5 %Eddy County7.5Cavalier County: 7.4 %Cavalier County7.4Nelson County: 7.3 %Nelson County7.3McIntosh County: 6.8 %McIntosh County6.8Pembina County: 6.8 %Pembina County6.8Walsh County: 6.7 %Walsh County6.7Emmons County: 6.6 %Emmons County6.6Ward County: 6.6 %Ward County6.6Bottineau County: 6.5 %Bottineau County6.5Traill County: 6.4 %Traill County6.4Grand Forks County: 6.3 %Grand Forks County6.3Oliver County: 6.3 %Oliver County6.3Pierce County: 6.1 %Pierce County6.1Cass County: 6 %Cass County6Barnes County: 5.9 %Barnes County5.9Richland County: 5.8 %Richland County5.8Wells County: 5.7 %Wells County5.7Billings County: 5.6 %Billings County5.6Steele County: 5.5 %Steele County5.5Morton County: 5.3 %Morton County5.3LaMoure County: 5.2 %LaMoure County5.2Renville County: 5.2 %Renville County5.2Burke County: 5.2 %Burke County5.2Burleigh County: 5.1 %Burleigh County5.1Grant County: 5.1 %Grant County5.1Dickey County: 4.9 %Dickey County4.9McLean County: 4.7 %McLean County4.7Ransom County: 4.6 %Ransom County4.6McHenry County: 4.2 %McHenry County4.2Griggs County: 4.1 %Griggs County4.1Foster County: 3.4 %Foster County3.4Sargent County: 2.8 %Sargent County2.8Logan County: 2.5 %Logan County2.5Slope County: 2.3 %Slope County2.3Golden Valley County: 2.2 %Golden Valley County2.2Sioux County: 33.3 %Sioux County33.3Rolette County: 27.8 %Rolette County27.8Dunn County: 19.7 %Dunn County19.7McKenzie County: 17.9 %McKenzie County17.9Mountrail County: 17 %Mountrail County17Williams County: 13.3 %Williams County13.3Mercer County: 12.7 %Mercer County12.7Kidder County: 11.9 %Kidder County11.9Hettinger County: 9.8 %Hettinger County9.8Towner County: 9.6 %Towner County9.6Sheridan County: 9.5 %Sheridan County9.5Adams County: 9.4 %Adams County9.4Stark County: 9 %Stark County9Ramsey County: 8.9 %Ramsey County8.9Divide County: 8.2 %Divide County8.2Stutsman County: 8.1 %Stutsman County8.1Benson County: 7.6 %Benson County7.6Bowman County: 7.6 %Bowman County7.6Eddy County: 7.5 %Eddy County7.5Cavalier County: 7.4 %Cavalier County7.4Nelson County: 7.3 %Nelson County7.3McIntosh County: 6.8 %McIntosh County6.8Pembina County: 6.8 %Pembina County6.8Walsh County: 6.7 %Walsh County6.7Emmons County: 6.6 %Emmons County6.6Ward County: 6.6 %Ward County6.6Bottineau County: 6.5 %Bottineau County6.5Traill County: 6.4 %Traill County6.4Grand Forks County: 6.3 %Grand Forks County6.3Oliver County: 6.3 %Oliver County6.3Pierce County: 6.1 %Pierce County6.1Cass County: 6 %Cass County6Barnes County: 5.9 %Barnes County5.9Richland County: 5.8 %Richland County5.8Wells County: 5.7 %Wells County5.7Billings County: 5.6 %Billings County5.6Steele County: 5.5 %Steele County5.5Morton County: 5.3 %Morton County5.3LaMoure County: 5.2 %LaMoure County5.2Renville County: 5.2 %Renville County5.2Burke County: 5.2 %Burke County5.2Burleigh County: 5.1 %Burleigh County5.1Grant County: 5.1 %Grant County5.1Dickey County: 4.9 %Dickey County4.9McLean County: 4.7 %McLean County4.7Ransom County: 4.6 %Ransom County4.6McHenry County: 4.2 %McHenry County4.2Griggs County: 4.1 %Griggs County4.1Foster County: 3.4 %Foster County3.4Sargent County: 2.8 %Sargent County2.8Logan County: 2.5 %Logan County2.5Slope County: 2.3 %Slope County2.3Golden Valley County: 2.2 %Golden Valley County2.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Sioux County33.3
2Rolette County27.8
3Dunn County19.7
4McKenzie County17.9
5Mountrail County17
6Williams County13.3
7Mercer County12.7
8Kidder County11.9
9Hettinger County9.8
10Towner County9.6
11Sheridan County9.5
12Adams County9.4
13Stark County9
14Ramsey County8.9
15Divide County8.2
16Stutsman County8.1
17Benson County7.6
18Bowman County7.6
19Eddy County7.5
20Cavalier County7.4
21Nelson County7.3
22McIntosh County6.8
23Pembina County6.8
24Walsh County6.7
25Emmons County6.6
26Ward County6.6
27Bottineau County6.5
28Traill County6.4
29Grand Forks County6.3
30Oliver County6.3
31Pierce County6.1
32Cass County6
33Barnes County5.9
34Richland County5.8
35Wells County5.7
36Billings County5.6
37Steele County5.5
38Morton County5.3
39LaMoure County5.2
40Renville County5.2
41Burke County5.2
42Burleigh County5.1
43Grant County5.1
44Dickey County4.9
45McLean County4.7
46Ransom County4.6
47McHenry County4.2
48Griggs County4.1
49Foster County3.4
50Sargent County2.8
51Logan County2.5
52Slope County2.3
53Golden Valley County2.2

Other periods

About this ranking

People without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population. 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs (Counties in North Dakota by uninsured rate, all ages (US), 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in North Dakota by uninsured rate, all ages (US), 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/north-dakota-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Counties in North Dakota by uninsured rate, all ages (US), 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/north-dakota-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs, Counties in North Dakota by uninsured rate, all ages (US), 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/north-dakota-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_north_dakota_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in North Dakota by uninsured rate, all ages (US), 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/north-dakota-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs: Counties in North Dakota by uninsured rate, all ages (US), 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/north-dakota-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/north-dakota-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people with no health insurance coverage as a percentage of the civilian noninstitutionalized population, 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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Questions

Which county has the highest uninsured rate, all ages (US)?

Sioux County, with 33.3% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, all ages (US)?

Golden Valley County, with 2.2% 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 with no health insurance coverage as a percentage of the civilian noninstitutionalized population, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, all ages (US): other rankings

Counties in North Dakota: more rankings