Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS)

Colleton County had the highest uninsured rate, ages 35 to 64 (US, ACS) of 46 counties in 2022, at 22.5%. McCormick County had the lowest, at 9%. The median was 14.6% and the figure for South Carolina was 13.5%. Source: the U.S. Census Bureau.

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Highest22.5Colleton County
Median14.646 counties
South Carolina13.5History

Map of counties, 2022

Abbeville County: 14.7 %Aiken County: 12.7 %Allendale County: 14.9 %Anderson County: 13.4 %Bamberg County: 14.4 %Barnwell County: 15.3 %Beaufort County: 13.3 %Berkeley County: 14 %Calhoun County: 16.6 %Charleston County: 10.3 %Cherokee County: 15.8 %Chester County: 15.6 %Chesterfield County: 17.3 %Clarendon County: 15.4 %Colleton County: 22.5 %Darlington County: 11.9 %Dillon County: 21.3 %Dorchester County: 12.8 %Edgefield County: 14.5 %Fairfield County: 9.1 %Florence County: 14.7 %Georgetown County: 15.8 %Greenville County: 13.1 %Greenwood County: 13.1 %Hampton County: 12.8 %Horry County: 18.8 %Jasper County: 20.3 %Kershaw County: 11.8 %Lancaster County: 10.5 %Laurens County: 18.8 %Lee County: 13.7 %Lexington County: 11.2 %McCormick County: 9 %Marion County: 16.8 %Marlboro County: 19.2 %Newberry County: 11.9 %Oconee County: 15.2 %Orangeburg County: 14.9 %Pickens County: 13.2 %Richland County: 10.7 %Saluda County: 22.3 %Spartanburg County: 14 %Sumter County: 14.7 %Union County: 14.8 %Williamsburg County: 19.1 %York County: 10.3 %
  • Under 12
  • 12 to 13
  • 13 to 15
  • 15 to 18
  • 18 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Colleton County: 22.5 %Colleton County22.5Saluda County: 22.3 %Saluda County22.3Dillon County: 21.3 %Dillon County21.3Jasper County: 20.3 %Jasper County20.3Marlboro County: 19.2 %Marlboro County19.2Williamsburg County: 19.1 %Williamsburg County19.1Laurens County: 18.8 %Laurens County18.8Horry County: 18.8 %Horry County18.8Chesterfield County: 17.3 %Chesterfield County17.3Marion County: 16.8 %Marion County16.8Calhoun County: 16.6 %Calhoun County16.6Cherokee County: 15.8 %Cherokee County15.8Georgetown County: 15.8 %Georgetown County15.8Chester County: 15.6 %Chester County15.6Clarendon County: 15.4 %Clarendon County15.4Barnwell County: 15.3 %Barnwell County15.3Oconee County: 15.2 %Oconee County15.2Allendale County: 14.9 %Allendale County14.9Orangeburg County: 14.9 %Orangeburg County14.9Union County: 14.8 %Union County14.8Sumter County: 14.7 %Sumter County14.7Florence County: 14.7 %Florence County14.7Abbeville County: 14.7 %Abbeville County14.7Edgefield County: 14.5 %Edgefield County14.5Bamberg County: 14.4 %Bamberg County14.4Berkeley County: 14 %Berkeley County14Spartanburg County: 14 %Spartanburg County14Lee County: 13.7 %Lee County13.7Anderson County: 13.4 %Anderson County13.4Beaufort County: 13.3 %Beaufort County13.3Pickens County: 13.2 %Pickens County13.2Greenwood County: 13.1 %Greenwood County13.1Greenville County: 13.1 %Greenville County13.1Hampton County: 12.8 %Hampton County12.8Dorchester County: 12.8 %Dorchester County12.8Aiken County: 12.7 %Aiken County12.7Darlington County: 11.9 %Darlington County11.9Newberry County: 11.9 %Newberry County11.9Kershaw County: 11.8 %Kershaw County11.8Lexington County: 11.2 %Lexington County11.2Richland County: 10.7 %Richland County10.7Lancaster County: 10.5 %Lancaster County10.5Charleston County: 10.3 %Charleston County10.3York County: 10.3 %York County10.3Fairfield County: 9.1 %Fairfield County9.1McCormick County: 9 %McCormick County9Colleton County: 22.5 %Colleton County22.5Saluda County: 22.3 %Saluda County22.3Dillon County: 21.3 %Dillon County21.3Jasper County: 20.3 %Jasper County20.3Marlboro County: 19.2 %Marlboro County19.2Williamsburg County: 19.1 %Williamsburg County19.1Laurens County: 18.8 %Laurens County18.8Horry County: 18.8 %Horry County18.8Chesterfield County: 17.3 %Chesterfield County17.3Marion County: 16.8 %Marion County16.8Calhoun County: 16.6 %Calhoun County16.6Cherokee County: 15.8 %Cherokee County15.8Georgetown County: 15.8 %Georgetown County15.8Chester County: 15.6 %Chester County15.6Clarendon County: 15.4 %Clarendon County15.4Barnwell County: 15.3 %Barnwell County15.3Oconee County: 15.2 %Oconee County15.2Allendale County: 14.9 %Allendale County14.9Orangeburg County: 14.9 %Orangeburg County14.9Union County: 14.8 %Union County14.8Sumter County: 14.7 %Sumter County14.7Florence County: 14.7 %Florence County14.7Abbeville County: 14.7 %Abbeville County14.7Edgefield County: 14.5 %Edgefield County14.5Bamberg County: 14.4 %Bamberg County14.4Berkeley County: 14 %Berkeley County14Spartanburg County: 14 %Spartanburg County14Lee County: 13.7 %Lee County13.7Anderson County: 13.4 %Anderson County13.4Beaufort County: 13.3 %Beaufort County13.3Pickens County: 13.2 %Pickens County13.2Greenwood County: 13.1 %Greenwood County13.1Greenville County: 13.1 %Greenville County13.1Hampton County: 12.8 %Hampton County12.8Dorchester County: 12.8 %Dorchester County12.8Aiken County: 12.7 %Aiken County12.7Darlington County: 11.9 %Darlington County11.9Newberry County: 11.9 %Newberry County11.9Kershaw County: 11.8 %Kershaw County11.8Lexington County: 11.2 %Lexington County11.2Richland County: 10.7 %Richland County10.7Lancaster County: 10.5 %Lancaster County10.5Charleston County: 10.3 %Charleston County10.3York County: 10.3 %York County10.3Fairfield County: 9.1 %Fairfield County9.1McCormick County: 9 %McCormick County9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Colleton County22.5+3.1 pts
2Saluda County22.3-3.9 pts
3Dillon County21.3+3.4 pts
4Jasper County20.3+1.3 pts
5Marlboro County19.2+1.3 pts
6Williamsburg County19.1+2.5 pts
7Laurens County18.8+0.3 pts
8Horry County18.8-0.8 pts
9Chesterfield County17.3+0.4 pts
10Marion County16.8-3.8 pts
11Calhoun County16.6+0.7 pts
12Cherokee County15.8+0.4 pts
13Georgetown County15.80 pts
14Chester County15.60 pts
15Clarendon County15.4-0.9 pts
16Barnwell County15.3-3.5 pts
17Oconee County15.2-0.6 pts
18Allendale County14.9+1.8 pts
19Orangeburg County14.9-1.5 pts
20Union County14.8+0.5 pts
21Sumter County14.7+0.1 pts
22Florence County14.7+0.2 pts
23Abbeville County14.7-2.7 pts
24Edgefield County14.5+2.1 pts
25Bamberg County14.4-0.3 pts
26Berkeley County14-0.2 pts
27Spartanburg County14+0.3 pts
28Lee County13.7+1.2 pts
29Anderson County13.4-0.5 pts
30Beaufort County13.3-0.3 pts
31Pickens County13.2+0.2 pts
32Greenwood County13.1-0.8 pts
33Greenville County13.1-0.3 pts
34Hampton County12.8+0.5 pts
35Dorchester County12.8-0.2 pts
36Aiken County12.7-0.6 pts
37Darlington County11.9-0.2 pts
38Newberry County11.9-0.6 pts
39Kershaw County11.8-1.1 pts
40Lexington County11.2-0.8 pts
41Richland County10.7-0.7 pts
42Lancaster County10.5-0.9 pts
43Charleston County10.3-1.2 pts
44York County10.3-0.8 pts
45Fairfield County9.1-3 pts
46McCormick County9-0.4 pts

Other periods

About this ranking

People aged 35 to 64 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 35 to 64. 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 aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs (Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs, Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs: Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS), 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-35-64/south-carolina-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b27010.dat. Retrieved 2026-10-12.
ER  - 
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Rank Counties in South Carolina by uninsured rate, ages 35 to 64 (US, ACS) using official data, and cite the source.
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Questions

Which county has the highest uninsured rate, ages 35 to 64 (US, ACS)?

Colleton County, with 22.5% in 2022, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 35 to 64 (US, ACS)?

McCormick County, with 9% in 2022.

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 aged 35 to 64 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 35 to 64, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 35 to 64 (US, ACS): other rankings

Counties in South Carolina: more rankings