Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Missouri

Counties in Missouri by uninsured rate, ages 18 to 64 (US model-based estimate)

McDonald County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 115 counties in 2020, at 26.5%. St. Charles County had the lowest, at 7.6%. The median was 17.4% and the figure for Missouri was 14.3%. Source: the U.S. Census Bureau.

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Highest26.5McDonald County
Lowest7.6St. Charles County
Median17.4115 counties
Missouri14.3History

Map of counties, 2020

Adair County: 18.9 %Andrew County: 14.4 %Atchison County: 16.3 %Audrain County: 18 %Barry County: 20.1 %Barton County: 19 %Bates County: 18.4 %Benton County: 18 %Bollinger County: 19.4 %Boone County: 12.3 %Buchanan County: 16.4 %Butler County: 18.3 %Caldwell County: 18.2 %Callaway County: 14.9 %Camden County: 17.4 %Cape Girardeau County: 14 %Carroll County: 16.8 %Carter County: 20.9 %Cass County: 14 %Cedar County: 19.5 %Chariton County: 15.9 %Christian County: 15.8 %Clark County: 18.7 %Clay County: 11.9 %Clinton County: 14.6 %Cole County: 12 %Cooper County: 14 %Crawford County: 18.6 %Dade County: 17.8 %Dallas County: 20.5 %Daviess County: 21.4 %DeKalb County: 13.5 %Dent County: 19.7 %Douglas County: 18.2 %Dunklin County: 22.1 %Franklin County: 14.4 %Gasconade County: 16.3 %Gentry County: 17.4 %Greene County: 16.4 %Grundy County: 19.8 %Harrison County: 16.5 %Henry County: 17.8 %Hickory County: 19.4 %Holt County: 16.7 %Howard County: 14.3 %Howell County: 18.5 %Iron County: 19.2 %Jackson County: 15.4 %Jasper County: 19.5 %Jefferson County: 13.2 %Johnson County: 15 %Knox County: 17.9 %Laclede County: 17.2 %Lafayette County: 14.8 %Lawrence County: 21.2 %Lewis County: 14.6 %Lincoln County: 13.8 %Linn County: 16.5 %Livingston County: 17.2 %McDonald County: 26.5 %Macon County: 16.1 %Madison County: 16.9 %Maries County: 17.8 %Marion County: 15.5 %Mercer County: 19.4 %Miller County: 20.2 %Mississippi County: 17.9 %Moniteau County: 21 %Monroe County: 16.9 %Montgomery County: 16.8 %Morgan County: 25 %New Madrid County: 17.8 %Newton County: 19.2 %Nodaway County: 14.8 %Oregon County: 19.2 %Osage County: 12.8 %Ozark County: 19 %Pemiscot County: 17.3 %Perry County: 14 %Pettis County: 19.5 %Phelps County: 19.5 %Pike County: 17.2 %Platte County: 9.6 %Polk County: 17.2 %Pulaski County: 15 %Putnam County: 16.8 %Ralls County: 14 %Randolph County: 15.6 %Ray County: 15.2 %Reynolds County: 18.5 %Ripley County: 19.6 %St. Charles County: 7.6 %St. Clair County: 19.2 %Ste. Genevieve County: 14.1 %St. Francois County: 16.7 %St. Louis County: 10.1 %Saline County: 17.5 %Schuyler County: 18.1 %Scotland County: 25.1 %Scott County: 16.4 %Shannon County: 22.4 %Shelby County: 16.8 %Stoddard County: 19.3 %Stone County: 19 %Sullivan County: 18.2 %Taney County: 22.1 %Texas County: 19.2 %Vernon County: 18.3 %Warren County: 15.2 %Washington County: 17.9 %Wayne County: 18.3 %Webster County: 20.3 %Worth County: 15.4 %Wright County: 20.1 %St. Louis city: 13.9 %
  • Under 14
  • 14 to 16
  • 16 to 17
  • 17 to 19
  • 19 to 20
  • 20 and over
%, 2020. 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, 2020

McDonald County: 26.5 %McDonald County26.5Scotland County: 25.1 %Scotland County25.1Morgan County: 25 %Morgan County25Shannon County: 22.4 %Shannon County22.4Dunklin County: 22.1 %Dunklin County22.1Taney County: 22.1 %Taney County22.1Daviess County: 21.4 %Daviess County21.4Lawrence County: 21.2 %Lawrence County21.2Moniteau County: 21 %Moniteau County21Carter County: 20.9 %Carter County20.9Dallas County: 20.5 %Dallas County20.5Webster County: 20.3 %Webster County20.3Miller County: 20.2 %Miller County20.2Barry County: 20.1 %Barry County20.1Wright County: 20.1 %Wright County20.1Grundy County: 19.8 %Grundy County19.8Dent County: 19.7 %Dent County19.7Ripley County: 19.6 %Ripley County19.6Cedar County: 19.5 %Cedar County19.5Jasper County: 19.5 %Jasper County19.5Pettis County: 19.5 %Pettis County19.5Phelps County: 19.5 %Phelps County19.5Bollinger County: 19.4 %Bollinger County19.4Hickory County: 19.4 %Hickory County19.4Mercer County: 19.4 %Mercer County19.4Stoddard County: 19.3 %Stoddard County19.3Iron County: 19.2 %Iron County19.2Newton County: 19.2 %Newton County19.2Oregon County: 19.2 %Oregon County19.2St. Clair County: 19.2 %St. Clair County19.2Texas County: 19.2 %Texas County19.2Barton County: 19 %Barton County19Ozark County: 19 %Ozark County19Stone County: 19 %Stone County19Adair County: 18.9 %Adair County18.9Clark County: 18.7 %Clark County18.7Crawford County: 18.6 %Crawford County18.6Howell County: 18.5 %Howell County18.5Reynolds County: 18.5 %Reynolds County18.5Bates County: 18.4 %Bates County18.4McDonald County: 26.5 %McDonald County26.5Scotland County: 25.1 %Scotland County25.1Morgan County: 25 %Morgan County25Shannon County: 22.4 %Shannon County22.4Dunklin County: 22.1 %Dunklin County22.1Taney County: 22.1 %Taney County22.1Daviess County: 21.4 %Daviess County21.4Lawrence County: 21.2 %Lawrence County21.2Moniteau County: 21 %Moniteau County21Carter County: 20.9 %Carter County20.9Dallas County: 20.5 %Dallas County20.5Webster County: 20.3 %Webster County20.3Miller County: 20.2 %Miller County20.2Barry County: 20.1 %Barry County20.1Wright County: 20.1 %Wright County20.1Grundy County: 19.8 %Grundy County19.8Dent County: 19.7 %Dent County19.7Ripley County: 19.6 %Ripley County19.6Cedar County: 19.5 %Cedar County19.5Jasper County: 19.5 %Jasper County19.5Pettis County: 19.5 %Pettis County19.5Phelps County: 19.5 %Phelps County19.5Bollinger County: 19.4 %Bollinger County19.4Hickory County: 19.4 %Hickory County19.4Mercer County: 19.4 %Mercer County19.4Stoddard County: 19.3 %Stoddard County19.3Iron County: 19.2 %Iron County19.2Newton County: 19.2 %Newton County19.2Oregon County: 19.2 %Oregon County19.2St. Clair County: 19.2 %St. Clair County19.2Texas County: 19.2 %Texas County19.2Barton County: 19 %Barton County19Ozark County: 19 %Ozark County19Stone County: 19 %Stone County19Adair County: 18.9 %Adair County18.9Clark County: 18.7 %Clark County18.7Crawford County: 18.6 %Crawford County18.6Howell County: 18.5 %Howell County18.5Reynolds County: 18.5 %Reynolds County18.5Bates County: 18.4 %Bates County18.4
%. 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

RankCounties2020 (%)Change on 2019
1McDonald County26.5-0.8 pts
2Scotland County25.1-0.5 pts
3Morgan County25+0.8 pts
4Shannon County22.4+0.3 pts
5Dunklin County22.1+2.8 pts
5Taney County22.1+0.5 pts
7Daviess County21.4-0.4 pts
8Lawrence County21.20 pts
9Moniteau County21+1.3 pts
10Carter County20.9+2.6 pts
11Dallas County20.5+0.2 pts
12Webster County20.3+2 pts
13Miller County20.2+1.3 pts
14Barry County20.1-2.2 pts
14Wright County20.1-2.5 pts
16Grundy County19.8+1.9 pts
17Dent County19.7-0.3 pts
18Ripley County19.6-1.1 pts
19Cedar County19.5-0.5 pts
19Jasper County19.5-0.9 pts
19Pettis County19.5+0.9 pts
19Phelps County19.5+1.2 pts
23Bollinger County19.4+0.1 pts
23Hickory County19.4-0.6 pts
23Mercer County19.40 pts
26Stoddard County19.3+1.9 pts
27Iron County19.2+2.9 pts
27Newton County19.2+0.1 pts
27Oregon County19.2-0.5 pts
27St. Clair County19.2+0.1 pts
27Texas County19.2-3.9 pts
32Barton County19-0.2 pts
32Ozark County19-3.8 pts
32Stone County19+0.3 pts
35Adair County18.9+1.4 pts
36Clark County18.7+1.3 pts
37Crawford County18.6-0.2 pts
38Howell County18.5-1.1 pts
38Reynolds County18.5-0.1 pts
40Bates County18.4+1.3 pts
41Butler County18.30 pts
41Vernon County18.3+0.7 pts
41Wayne County18.3-1.6 pts
44Caldwell County18.2+1.7 pts
44Douglas County18.2-3 pts
44Sullivan County18.2+1 pts
47Schuyler County18.1-0.6 pts
48Audrain County18+1.3 pts
48Benton County18-0.8 pts
50Knox County17.9-5.3 pts
50Mississippi County17.9-0.2 pts
50Washington County17.9-0.2 pts
53Dade County17.8-1.9 pts
53Henry County17.8+0.9 pts
53Maries County17.8-0.7 pts
53New Madrid County17.8+0.8 pts
57Saline County17.5+0.5 pts
58Camden County17.4-0.7 pts
58Gentry County17.4+1.7 pts
60Pemiscot County17.3+0.5 pts
61Laclede County17.2+0.2 pts
61Livingston County17.2+2.1 pts
61Pike County17.2+2 pts
61Polk County17.2-1.7 pts
65Madison County16.9+0.9 pts
65Monroe County16.9+2 pts
67Carroll County16.8+1.1 pts
67Montgomery County16.8+0.2 pts
67Putnam County16.8-1.1 pts
67Shelby County16.8-0.1 pts
71Holt County16.7+0.6 pts
71St. Francois County16.7+1.5 pts
73Harrison County16.5+0.3 pts
73Linn County16.5+0.9 pts
75Buchanan County16.4-0.2 pts
75Greene County16.4+1.3 pts
75Scott County16.4-0.5 pts
78Atchison County16.3+2.2 pts
78Gasconade County16.3-0.1 pts
80Macon County16.1-0.4 pts
81Chariton County15.9+0.7 pts
82Christian County15.8+1.3 pts
83Randolph County15.6+0.4 pts
84Marion County15.5+2.3 pts
85Jackson County15.4-0.1 pts
85Worth County15.4-0.2 pts
87Ray County15.2+0.9 pts
87Warren County15.2+1.9 pts
89Johnson County15+0.9 pts
89Pulaski County15+0.2 pts
91Callaway County14.9+1.8 pts
92Lafayette County14.8+1.4 pts
92Nodaway County14.80 pts
94Clinton County14.6+0.9 pts
94Lewis County14.6+0.1 pts
96Andrew County14.4+1.9 pts
96Franklin County14.4+0.7 pts
98Howard County14.3-0.9 pts
99Ste. Genevieve County14.1+2 pts
100Cape Girardeau County14+0.4 pts
100Cass County14+2.2 pts
100Cooper County14+0.4 pts
100Perry County14+1.1 pts
100Ralls County14+1.5 pts
105St. Louis city13.9-0.5 pts
106Lincoln County13.8+0.2 pts
107DeKalb County13.5+0.1 pts
108Jefferson County13.2-0.2 pts
109Osage County12.8+0.3 pts
110Boone County12.3-0.1 pts
111Cole County12-0.2 pts
112Clay County11.9+0.9 pts
113St. Louis County10.1+0.1 pts
114Platte County9.6+0.2 pts
115St. Charles County7.6-0.3 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-2020-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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020. 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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020.

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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2020,
  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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020. 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-2020-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 Missouri by uninsured rate, ages 18 to 64 (US model-based estimate), 2020
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-2020-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/missouri-counties?period=2020.
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-2020-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)?

McDonald County, with 26.5% in 2020, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

St. Charles County, with 7.6% in 2020.

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 Missouri: more rankings