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

Counties in Missouri by uninsured rate, all ages (US)

Scotland County had the highest uninsured rate, all ages (US) of 115 counties in 2021, at 34.7%. St. Charles County had the lowest, at 4.3%. The median was 11.5% and the figure for Missouri was 9.5%. Source: the U.S. Census Bureau.

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Highest34.7Scotland County
Lowest4.3St. Charles County
Median11.5115 counties
Missouri9.5History

Map of counties, 2021

Adair County: 8.5 %Andrew County: 5.9 %Atchison County: 11 %Audrain County: 12.8 %Barry County: 12.7 %Barton County: 12.7 %Bates County: 9.9 %Benton County: 11.5 %Bollinger County: 9.3 %Boone County: 7.3 %Buchanan County: 12.4 %Butler County: 13.6 %Caldwell County: 11.6 %Callaway County: 10.2 %Camden County: 12.5 %Cape Girardeau County: 7.3 %Carroll County: 8.2 %Carter County: 18.3 %Cass County: 8.1 %Cedar County: 16.1 %Chariton County: 8.6 %Christian County: 8.7 %Clark County: 14.3 %Clay County: 7.8 %Clinton County: 8.8 %Cole County: 7.1 %Cooper County: 10.5 %Crawford County: 14.6 %Dade County: 11.3 %Dallas County: 17.9 %Daviess County: 14.4 %DeKalb County: 8 %Dent County: 14.8 %Douglas County: 13.9 %Dunklin County: 17 %Franklin County: 7.7 %Gasconade County: 7.5 %Gentry County: 12.9 %Greene County: 11.6 %Grundy County: 17.4 %Harrison County: 8 %Henry County: 10.6 %Hickory County: 16.3 %Holt County: 9.5 %Howard County: 9.8 %Howell County: 15.2 %Iron County: 11.5 %Jackson County: 11.6 %Jasper County: 13.5 %Jefferson County: 8.2 %Johnson County: 9.2 %Knox County: 24.2 %Laclede County: 11.8 %Lafayette County: 7.1 %Lawrence County: 13.6 %Lewis County: 9.1 %Lincoln County: 8.1 %Linn County: 9.6 %Livingston County: 10.5 %McDonald County: 20.8 %Macon County: 10.9 %Madison County: 14.8 %Maries County: 10.8 %Marion County: 8.2 %Mercer County: 13.7 %Miller County: 12 %Mississippi County: 12.3 %Moniteau County: 15.4 %Monroe County: 10.2 %Montgomery County: 10.3 %Morgan County: 23.7 %New Madrid County: 14.2 %Newton County: 13.7 %Nodaway County: 8.7 %Oregon County: 17.8 %Osage County: 4.9 %Ozark County: 14.3 %Pemiscot County: 12.9 %Perry County: 6.7 %Pettis County: 14 %Phelps County: 8.6 %Pike County: 7.8 %Platte County: 5.7 %Polk County: 12.7 %Pulaski County: 11 %Putnam County: 12.4 %Ralls County: 8.8 %Randolph County: 10.4 %Ray County: 10.5 %Reynolds County: 13.3 %Ripley County: 15.1 %St. Charles County: 4.3 %St. Clair County: 15.3 %Ste. Genevieve County: 4.9 %St. Francois County: 10.9 %St. Louis County: 6 %Saline County: 6.1 %Schuyler County: 15.5 %Scotland County: 34.7 %Scott County: 11.9 %Shannon County: 17.5 %Shelby County: 11.6 %Stoddard County: 13.9 %Stone County: 9.6 %Sullivan County: 11.2 %Taney County: 15.7 %Texas County: 18.6 %Vernon County: 16.2 %Warren County: 7.3 %Washington County: 12.7 %Wayne County: 14.1 %Webster County: 15.4 %Worth County: 7.6 %Wright County: 16.8 %St. Louis city: 10.5 %
  • Under 8
  • 8 to 9.8
  • 9.8 to 12
  • 12 to 13
  • 13 to 15
  • 15 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Scotland County: 34.7 %Scotland County34.7Knox County: 24.2 %Knox County24.2Morgan County: 23.7 %Morgan County23.7McDonald County: 20.8 %McDonald County20.8Texas County: 18.6 %Texas County18.6Carter County: 18.3 %Carter County18.3Dallas County: 17.9 %Dallas County17.9Oregon County: 17.8 %Oregon County17.8Shannon County: 17.5 %Shannon County17.5Grundy County: 17.4 %Grundy County17.4Dunklin County: 17 %Dunklin County17Wright County: 16.8 %Wright County16.8Hickory County: 16.3 %Hickory County16.3Vernon County: 16.2 %Vernon County16.2Cedar County: 16.1 %Cedar County16.1Taney County: 15.7 %Taney County15.7Schuyler County: 15.5 %Schuyler County15.5Webster County: 15.4 %Webster County15.4Moniteau County: 15.4 %Moniteau County15.4St. Clair County: 15.3 %St. Clair County15.3Howell County: 15.2 %Howell County15.2Ripley County: 15.1 %Ripley County15.1Dent County: 14.8 %Dent County14.8Madison County: 14.8 %Madison County14.8Crawford County: 14.6 %Crawford County14.6Daviess County: 14.4 %Daviess County14.4Ozark County: 14.3 %Ozark County14.3Clark County: 14.3 %Clark County14.3New Madrid County: 14.2 %New Madrid County14.2Wayne County: 14.1 %Wayne County14.1Pettis County: 14 %Pettis County14Stoddard County: 13.9 %Stoddard County13.9Douglas County: 13.9 %Douglas County13.9Mercer County: 13.7 %Mercer County13.7Newton County: 13.7 %Newton County13.7Butler County: 13.6 %Butler County13.6Lawrence County: 13.6 %Lawrence County13.6Jasper County: 13.5 %Jasper County13.5Reynolds County: 13.3 %Reynolds County13.3Pemiscot County: 12.9 %Pemiscot County12.9Scotland County: 34.7 %Scotland County34.7Knox County: 24.2 %Knox County24.2Morgan County: 23.7 %Morgan County23.7McDonald County: 20.8 %McDonald County20.8Texas County: 18.6 %Texas County18.6Carter County: 18.3 %Carter County18.3Dallas County: 17.9 %Dallas County17.9Oregon County: 17.8 %Oregon County17.8Shannon County: 17.5 %Shannon County17.5Grundy County: 17.4 %Grundy County17.4Dunklin County: 17 %Dunklin County17Wright County: 16.8 %Wright County16.8Hickory County: 16.3 %Hickory County16.3Vernon County: 16.2 %Vernon County16.2Cedar County: 16.1 %Cedar County16.1Taney County: 15.7 %Taney County15.7Schuyler County: 15.5 %Schuyler County15.5Webster County: 15.4 %Webster County15.4Moniteau County: 15.4 %Moniteau County15.4St. Clair County: 15.3 %St. Clair County15.3Howell County: 15.2 %Howell County15.2Ripley County: 15.1 %Ripley County15.1Dent County: 14.8 %Dent County14.8Madison County: 14.8 %Madison County14.8Crawford County: 14.6 %Crawford County14.6Daviess County: 14.4 %Daviess County14.4Ozark County: 14.3 %Ozark County14.3Clark County: 14.3 %Clark County14.3New Madrid County: 14.2 %New Madrid County14.2Wayne County: 14.1 %Wayne County14.1Pettis County: 14 %Pettis County14Stoddard County: 13.9 %Stoddard County13.9Douglas County: 13.9 %Douglas County13.9Mercer County: 13.7 %Mercer County13.7Newton County: 13.7 %Newton County13.7Butler County: 13.6 %Butler County13.6Lawrence County: 13.6 %Lawrence County13.6Jasper County: 13.5 %Jasper County13.5Reynolds County: 13.3 %Reynolds County13.3Pemiscot County: 12.9 %Pemiscot County12.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Scotland County34.7
2Knox County24.2
3Morgan County23.7
4McDonald County20.8
5Texas County18.6
6Carter County18.3
7Dallas County17.9
8Oregon County17.8
9Shannon County17.5
10Grundy County17.4
11Dunklin County17
12Wright County16.8
13Hickory County16.3
14Vernon County16.2
15Cedar County16.1
16Taney County15.7
17Schuyler County15.5
18Webster County15.4
19Moniteau County15.4
20St. Clair County15.3
21Howell County15.2
22Ripley County15.1
23Dent County14.8
24Madison County14.8
25Crawford County14.6
26Daviess County14.4
27Ozark County14.3
28Clark County14.3
29New Madrid County14.2
30Wayne County14.1
31Pettis County14
32Stoddard County13.9
33Douglas County13.9
34Mercer County13.7
35Newton County13.7
36Butler County13.6
37Lawrence County13.6
38Jasper County13.5
39Reynolds County13.3
40Pemiscot County12.9
41Gentry County12.9
42Audrain County12.8
43Polk County12.7
44Barton County12.7
45Barry County12.7
46Washington County12.7
47Camden County12.5
48Putnam County12.4
49Buchanan County12.4
50Mississippi County12.3
51Miller County12
52Scott County11.9
53Laclede County11.8
54Caldwell County11.6
55Jackson County11.6
56Greene County11.6
56Shelby County11.6
58Benton County11.5
59Iron County11.5
60Dade County11.3
61Sullivan County11.2
62Pulaski County11
63Atchison County11
64St. Francois County10.9
65Macon County10.9
66Maries County10.8
67Henry County10.6
68Ray County10.5
69Livingston County10.5
70Cooper County10.5
71St. Louis city10.5
72Randolph County10.4
73Montgomery County10.3
74Callaway County10.2
74Monroe County10.2
76Bates County9.9
77Howard County9.8
78Stone County9.6
79Linn County9.6
80Holt County9.5
81Bollinger County9.3
82Johnson County9.2
83Lewis County9.1
84Clinton County8.8
85Ralls County8.8
86Nodaway County8.7
87Christian County8.7
88Chariton County8.6
89Phelps County8.6
90Adair County8.5
91Carroll County8.2
91Jefferson County8.2
91Marion County8.2
94Cass County8.1
95Lincoln County8.1
96DeKalb County8
97Harrison County8
98Pike County7.8
99Clay County7.8
100Franklin County7.7
101Worth County7.6
102Gasconade County7.5
103Cape Girardeau County7.3
104Boone County7.3
105Warren County7.3
106Cole County7.1
107Lafayette County7.1
108Perry County6.7
109Saline County6.1
110St. Louis County6
111Andrew County5.9
112Platte County5.7
113Osage County4.9
114Ste. Genevieve County4.9
115St. Charles County4.3

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 Missouri 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 Missouri 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/missouri-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 Missouri 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/missouri-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 Missouri 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/missouri-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_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 Missouri 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/missouri-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 Missouri 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/missouri-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate/missouri-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)?

Scotland County, with 34.7% in 2021, according to the U.S. Census Bureau.

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

St. Charles County, with 4.3% 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 Missouri: more rankings