Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024

Marion County had the highest uninsured rate, ages 19 to 34 (US, ACS) of 46 counties in 2024, at 35.3%. McCormick County had the lowest, at 9%. The median was 19.7% and the figure for South Carolina was 17.7%. Source: the U.S. Census Bureau.

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Highest35.3Marion County
Median19.746 counties
South Carolina17.7History

Map of counties, 2024

Abbeville County: 19.6 %Aiken County: 16.1 %Allendale County: 27.7 %Anderson County: 17.5 %Bamberg County: 25 %Barnwell County: 30.7 %Beaufort County: 17.4 %Berkeley County: 15 %Calhoun County: 10.3 %Charleston County: 14.7 %Cherokee County: 19.7 %Chester County: 19.7 %Chesterfield County: 23.9 %Clarendon County: 20.1 %Colleton County: 22.5 %Darlington County: 19 %Dillon County: 27.1 %Dorchester County: 16.9 %Edgefield County: 21.8 %Fairfield County: 23.2 %Florence County: 17 %Georgetown County: 20.3 %Greenville County: 17.2 %Greenwood County: 12.8 %Hampton County: 22 %Horry County: 24.8 %Jasper County: 27.4 %Kershaw County: 16.6 %Lancaster County: 15.4 %Laurens County: 22.8 %Lee County: 22.9 %Lexington County: 16.7 %McCormick County: 9 %Marion County: 35.3 %Marlboro County: 22.4 %Newberry County: 19.4 %Oconee County: 21 %Orangeburg County: 19.1 %Pickens County: 12.7 %Richland County: 14.4 %Saluda County: 33.9 %Spartanburg County: 18.6 %Sumter County: 24 %Union County: 20.7 %Williamsburg County: 20.2 %York County: 14.9 %
  • Under 15
  • 15 to 17
  • 17 to 20
  • 20 to 22
  • 22 to 24
  • 24 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Marion County: 35.3 %Marion County35.3Saluda County: 33.9 %Saluda County33.9Barnwell County: 30.7 %Barnwell County30.7Allendale County: 27.7 %Allendale County27.7Jasper County: 27.4 %Jasper County27.4Dillon County: 27.1 %Dillon County27.1Bamberg County: 25 %Bamberg County25Horry County: 24.8 %Horry County24.8Sumter County: 24 %Sumter County24Chesterfield County: 23.9 %Chesterfield County23.9Fairfield County: 23.2 %Fairfield County23.2Lee County: 22.9 %Lee County22.9Laurens County: 22.8 %Laurens County22.8Colleton County: 22.5 %Colleton County22.5Marlboro County: 22.4 %Marlboro County22.4Hampton County: 22 %Hampton County22Edgefield County: 21.8 %Edgefield County21.8Oconee County: 21 %Oconee County21Union County: 20.7 %Union County20.7Georgetown County: 20.3 %Georgetown County20.3Williamsburg County: 20.2 %Williamsburg County20.2Clarendon County: 20.1 %Clarendon County20.1Cherokee County: 19.7 %Cherokee County19.7Chester County: 19.7 %Chester County19.7Abbeville County: 19.6 %Abbeville County19.6Newberry County: 19.4 %Newberry County19.4Orangeburg County: 19.1 %Orangeburg County19.1Darlington County: 19 %Darlington County19Spartanburg County: 18.6 %Spartanburg County18.6Anderson County: 17.5 %Anderson County17.5Beaufort County: 17.4 %Beaufort County17.4Greenville County: 17.2 %Greenville County17.2Florence County: 17 %Florence County17Dorchester County: 16.9 %Dorchester County16.9Lexington County: 16.7 %Lexington County16.7Kershaw County: 16.6 %Kershaw County16.6Aiken County: 16.1 %Aiken County16.1Lancaster County: 15.4 %Lancaster County15.4Berkeley County: 15 %Berkeley County15York County: 14.9 %York County14.9Charleston County: 14.7 %Charleston County14.7Richland County: 14.4 %Richland County14.4Greenwood County: 12.8 %Greenwood County12.8Pickens County: 12.7 %Pickens County12.7Calhoun County: 10.3 %Calhoun County10.3McCormick County: 9 %McCormick County9Marion County: 35.3 %Marion County35.3Saluda County: 33.9 %Saluda County33.9Barnwell County: 30.7 %Barnwell County30.7Allendale County: 27.7 %Allendale County27.7Jasper County: 27.4 %Jasper County27.4Dillon County: 27.1 %Dillon County27.1Bamberg County: 25 %Bamberg County25Horry County: 24.8 %Horry County24.8Sumter County: 24 %Sumter County24Chesterfield County: 23.9 %Chesterfield County23.9Fairfield County: 23.2 %Fairfield County23.2Lee County: 22.9 %Lee County22.9Laurens County: 22.8 %Laurens County22.8Colleton County: 22.5 %Colleton County22.5Marlboro County: 22.4 %Marlboro County22.4Hampton County: 22 %Hampton County22Edgefield County: 21.8 %Edgefield County21.8Oconee County: 21 %Oconee County21Union County: 20.7 %Union County20.7Georgetown County: 20.3 %Georgetown County20.3Williamsburg County: 20.2 %Williamsburg County20.2Clarendon County: 20.1 %Clarendon County20.1Cherokee County: 19.7 %Cherokee County19.7Chester County: 19.7 %Chester County19.7Abbeville County: 19.6 %Abbeville County19.6Newberry County: 19.4 %Newberry County19.4Orangeburg County: 19.1 %Orangeburg County19.1Darlington County: 19 %Darlington County19Spartanburg County: 18.6 %Spartanburg County18.6Anderson County: 17.5 %Anderson County17.5Beaufort County: 17.4 %Beaufort County17.4Greenville County: 17.2 %Greenville County17.2Florence County: 17 %Florence County17Dorchester County: 16.9 %Dorchester County16.9Lexington County: 16.7 %Lexington County16.7Kershaw County: 16.6 %Kershaw County16.6Aiken County: 16.1 %Aiken County16.1Lancaster County: 15.4 %Lancaster County15.4Berkeley County: 15 %Berkeley County15York County: 14.9 %York County14.9Charleston County: 14.7 %Charleston County14.7Richland County: 14.4 %Richland County14.4Greenwood County: 12.8 %Greenwood County12.8Pickens County: 12.7 %Pickens County12.7Calhoun County: 10.3 %Calhoun County10.3McCormick County: 9 %McCormick County9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Marion County35.3+3.2 pts
2Saluda County33.9+3.5 pts
3Barnwell County30.7+3.7 pts
4Allendale County27.7-3.2 pts
5Jasper County27.4+6 pts
6Dillon County27.1-0.3 pts
7Bamberg County25-3.6 pts
8Horry County24.8-0.6 pts
9Sumter County24+1.8 pts
10Chesterfield County23.9+1 pts
11Fairfield County23.2+2.5 pts
12Lee County22.9+1.1 pts
13Laurens County22.8-1 pts
14Colleton County22.5-0.7 pts
15Marlboro County22.4-1.6 pts
16Hampton County22-5.9 pts
17Edgefield County21.8-0.5 pts
18Oconee County21+0.8 pts
19Union County20.7-1.4 pts
20Georgetown County20.3-1.5 pts
21Williamsburg County20.2+1.9 pts
22Clarendon County20.10 pts
23Cherokee County19.7+3 pts
24Chester County19.7-2.7 pts
25Abbeville County19.6-3.4 pts
26Newberry County19.4+0.6 pts
27Orangeburg County19.1+0.6 pts
28Darlington County19-0 pts
29Spartanburg County18.6-0.5 pts
30Anderson County17.5-0.8 pts
31Beaufort County17.4+0.4 pts
32Greenville County17.20 pts
33Florence County17-2.8 pts
34Dorchester County16.9-2.1 pts
35Lexington County16.7-1.3 pts
36Kershaw County16.6-0.5 pts
37Aiken County16.1-0.9 pts
38Lancaster County15.4-1.3 pts
39Berkeley County15-0.1 pts
40York County14.9-2 pts
41Charleston County14.7-0.8 pts
42Richland County14.4-0 pts
43Greenwood County12.8-0.8 pts
44Pickens County12.7+0.3 pts
45Calhoun County10.3-1.4 pts
46McCormick County9-2.2 pts

Other periods

About this ranking

People aged 19 to 34 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 19 to 34. 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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs (Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in South Carolina by uninsured rate, ages 19 to 34 (US, ACS), 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/south-carolina-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b27010.dat. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest uninsured rate, ages 19 to 34 (US, ACS)?

Marion County, with 35.3% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 19 to 34 (US, ACS)?

McCormick County, with 9% in 2024.

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 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 19 to 34 (US, ACS): other rankings

Counties in South Carolina: more rankings