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

Saluda County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 46 counties in 2023, at 18.7%. McCormick County had the lowest, at 10.6%. The median was 13.8% and the figure for South Carolina was 13%. Source: the U.S. Census Bureau.

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Highest18.7Saluda County
Median13.846 counties
South Carolina13History

Map of counties, 2023

Abbeville County: 14 %Aiken County: 13 %Allendale County: 13.5 %Anderson County: 14 %Bamberg County: 16.1 %Barnwell County: 15.6 %Beaufort County: 13.1 %Berkeley County: 11.3 %Calhoun County: 12.3 %Charleston County: 11.4 %Cherokee County: 13.7 %Chester County: 14.1 %Chesterfield County: 15 %Clarendon County: 14.2 %Colleton County: 17.1 %Darlington County: 13 %Dillon County: 15.4 %Dorchester County: 12.5 %Edgefield County: 15.4 %Fairfield County: 11.8 %Florence County: 13 %Georgetown County: 13.1 %Greenville County: 13.5 %Greenwood County: 14 %Hampton County: 17.5 %Horry County: 14.8 %Jasper County: 18.1 %Kershaw County: 13.3 %Lancaster County: 12.3 %Laurens County: 15.5 %Lee County: 16.1 %Lexington County: 11.3 %McCormick County: 10.6 %Marion County: 13.8 %Marlboro County: 13.1 %Newberry County: 15 %Oconee County: 14.7 %Orangeburg County: 13.7 %Pickens County: 14.3 %Richland County: 11.6 %Saluda County: 18.7 %Spartanburg County: 14.4 %Sumter County: 11.6 %Union County: 13.6 %Williamsburg County: 15.2 %York County: 10.7 %
  • Under 12
  • 12 to 13
  • 13 to 14
  • 14 to 15
  • 15 and over
%, 2023. 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.

All counties, 2023

Saluda County: 18.7 %Saluda County18.7Jasper County: 18.1 %Jasper County18.1Hampton County: 17.5 %Hampton County17.5Colleton County: 17.1 %Colleton County17.1Bamberg County: 16.1 %Bamberg County16.1Lee County: 16.1 %Lee County16.1Barnwell County: 15.6 %Barnwell County15.6Laurens County: 15.5 %Laurens County15.5Dillon County: 15.4 %Dillon County15.4Edgefield County: 15.4 %Edgefield County15.4Williamsburg County: 15.2 %Williamsburg County15.2Chesterfield County: 15 %Chesterfield County15Newberry County: 15 %Newberry County15Horry County: 14.8 %Horry County14.8Oconee County: 14.7 %Oconee County14.7Spartanburg County: 14.4 %Spartanburg County14.4Pickens County: 14.3 %Pickens County14.3Clarendon County: 14.2 %Clarendon County14.2Chester County: 14.1 %Chester County14.1Abbeville County: 14 %Abbeville County14Anderson County: 14 %Anderson County14Greenwood County: 14 %Greenwood County14Marion County: 13.8 %Marion County13.8Cherokee County: 13.7 %Cherokee County13.7Orangeburg County: 13.7 %Orangeburg County13.7Union County: 13.6 %Union County13.6Allendale County: 13.5 %Allendale County13.5Greenville County: 13.5 %Greenville County13.5Kershaw County: 13.3 %Kershaw County13.3Beaufort County: 13.1 %Beaufort County13.1Georgetown County: 13.1 %Georgetown County13.1Marlboro County: 13.1 %Marlboro County13.1Aiken County: 13 %Aiken County13Darlington County: 13 %Darlington County13Florence County: 13 %Florence County13Dorchester County: 12.5 %Dorchester County12.5Calhoun County: 12.3 %Calhoun County12.3Lancaster County: 12.3 %Lancaster County12.3Fairfield County: 11.8 %Fairfield County11.8Richland County: 11.6 %Richland County11.6Sumter County: 11.6 %Sumter County11.6Charleston County: 11.4 %Charleston County11.4Berkeley County: 11.3 %Berkeley County11.3Lexington County: 11.3 %Lexington County11.3York County: 10.7 %York County10.7McCormick County: 10.6 %McCormick County10.6Saluda County: 18.7 %Saluda County18.7Jasper County: 18.1 %Jasper County18.1Hampton County: 17.5 %Hampton County17.5Colleton County: 17.1 %Colleton County17.1Bamberg County: 16.1 %Bamberg County16.1Lee County: 16.1 %Lee County16.1Barnwell County: 15.6 %Barnwell County15.6Laurens County: 15.5 %Laurens County15.5Dillon County: 15.4 %Dillon County15.4Edgefield County: 15.4 %Edgefield County15.4Williamsburg County: 15.2 %Williamsburg County15.2Chesterfield County: 15 %Chesterfield County15Newberry County: 15 %Newberry County15Horry County: 14.8 %Horry County14.8Oconee County: 14.7 %Oconee County14.7Spartanburg County: 14.4 %Spartanburg County14.4Pickens County: 14.3 %Pickens County14.3Clarendon County: 14.2 %Clarendon County14.2Chester County: 14.1 %Chester County14.1Abbeville County: 14 %Abbeville County14Anderson County: 14 %Anderson County14Greenwood County: 14 %Greenwood County14Marion County: 13.8 %Marion County13.8Cherokee County: 13.7 %Cherokee County13.7Orangeburg County: 13.7 %Orangeburg County13.7Union County: 13.6 %Union County13.6Allendale County: 13.5 %Allendale County13.5Greenville County: 13.5 %Greenville County13.5Kershaw County: 13.3 %Kershaw County13.3Beaufort County: 13.1 %Beaufort County13.1Georgetown County: 13.1 %Georgetown County13.1Marlboro County: 13.1 %Marlboro County13.1Aiken County: 13 %Aiken County13Darlington County: 13 %Darlington County13Florence County: 13 %Florence County13Dorchester County: 12.5 %Dorchester County12.5Calhoun County: 12.3 %Calhoun County12.3Lancaster County: 12.3 %Lancaster County12.3Fairfield County: 11.8 %Fairfield County11.8Richland County: 11.6 %Richland County11.6Sumter County: 11.6 %Sumter County11.6Charleston County: 11.4 %Charleston County11.4Berkeley County: 11.3 %Berkeley County11.3Lexington County: 11.3 %Lexington County11.3York County: 10.7 %York County10.7McCormick County: 10.6 %McCormick County10.6
%. 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

RankCounties2023 (%)Change on 2022
1Saluda County18.7+1.5 pts
2Jasper County18.1-0.9 pts
3Hampton County17.5+1.1 pts
4Colleton County17.1+0.5 pts
5Bamberg County16.1-0.6 pts
5Lee County16.1+2.2 pts
7Barnwell County15.6-0.3 pts
8Laurens County15.5-0.5 pts
9Dillon County15.4-1.7 pts
9Edgefield County15.4+0.8 pts
11Williamsburg County15.2+1.8 pts
12Chesterfield County15-0.4 pts
12Newberry County15+0.2 pts
14Horry County14.8-2.8 pts
15Oconee County14.7-1 pts
16Spartanburg County14.4-0.9 pts
17Pickens County14.3+0.4 pts
18Clarendon County14.2-1.3 pts
19Chester County14.1+0.5 pts
20Abbeville County14+0.1 pts
20Anderson County14+0.3 pts
20Greenwood County14-0.4 pts
23Marion County13.8-1.8 pts
24Cherokee County13.7-0.5 pts
24Orangeburg County13.7-0.1 pts
26Union County13.6-0.3 pts
27Allendale County13.5-3.3 pts
27Greenville County13.5+0.7 pts
29Kershaw County13.3+0.8 pts
30Beaufort County13.1+0.1 pts
30Georgetown County13.1-1 pts
30Marlboro County13.1-1.8 pts
33Aiken County13-0.1 pts
33Darlington County13-1 pts
33Florence County130 pts
36Dorchester County12.5-0.1 pts
37Calhoun County12.3-0.3 pts
37Lancaster County12.3+0.8 pts
39Fairfield County11.8+0.2 pts
40Richland County11.6-0.1 pts
40Sumter County11.6-1.8 pts
42Charleston County11.4+0.1 pts
43Berkeley County11.3-0.4 pts
43Lexington County11.3-1.5 pts
45York County10.7-0.2 pts
46McCormick County10.6-0.2 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-2023-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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023. 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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023.

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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2023,
  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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023. 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-2023-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 South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2023
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-2023-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2023.
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-2023-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)?

Saluda County, with 18.7% in 2023, according to the U.S. Census Bureau.

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

McCormick County, with 10.6% in 2023.

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 South Carolina: more rankings