Data / Rankings / Population aged 18 to 64 / Counties in South Carolina

Counties in South Carolina by population aged 18 to 64

Richland County had the highest population aged 18 to 64 of 46 counties in 2021, at 63.9%. McCormick County had the lowest, at 51.4%. The median was 57.5% and the figure for South Carolina was 59%. Source: the U.S. Census Bureau.

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Highest63.9Richland County
Lowest51.4McCormick County
Median57.546 counties
South Carolina59History

Map of counties, 2021

Abbeville County: 56.8 %Aiken County: 57.3 %Allendale County: 59.4 %Anderson County: 58.6 %Bamberg County: 57.2 %Barnwell County: 57.1 %Beaufort County: 53 %Berkeley County: 60.8 %Calhoun County: 55.7 %Charleston County: 62.4 %Cherokee County: 59.3 %Chester County: 57.8 %Chesterfield County: 57.9 %Clarendon County: 55.3 %Colleton County: 56.1 %Darlington County: 57.1 %Dillon County: 56.4 %Dorchester County: 59.7 %Edgefield County: 61.5 %Fairfield County: 57 %Florence County: 57.9 %Georgetown County: 52.2 %Greenville County: 60 %Greenwood County: 57.7 %Hampton County: 58.6 %Horry County: 55.1 %Jasper County: 56.7 %Kershaw County: 57.2 %Lancaster County: 55.6 %Laurens County: 58.3 %Lee County: 60.5 %Lexington County: 59.2 %McCormick County: 51.4 %Marion County: 56 %Marlboro County: 61.3 %Newberry County: 57 %Oconee County: 56.1 %Orangeburg County: 57.2 %Pickens County: 63.8 %Richland County: 63.9 %Saluda County: 55.1 %Spartanburg County: 59.9 %Sumter County: 58.6 %Union County: 56.9 %Williamsburg County: 57.7 %York County: 60.1 %
  • Under 56
  • 56 to 57
  • 57 to 58
  • 58 to 59
  • 59 to 60
  • 60 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Richland County: 63.9 %Richland County63.9Pickens County: 63.8 %Pickens County63.8Charleston County: 62.4 %Charleston County62.4Edgefield County: 61.5 %Edgefield County61.5Marlboro County: 61.3 %Marlboro County61.3Berkeley County: 60.8 %Berkeley County60.8Lee County: 60.5 %Lee County60.5York County: 60.1 %York County60.1Greenville County: 60 %Greenville County60Spartanburg County: 59.9 %Spartanburg County59.9Dorchester County: 59.7 %Dorchester County59.7Allendale County: 59.4 %Allendale County59.4Cherokee County: 59.3 %Cherokee County59.3Lexington County: 59.2 %Lexington County59.2Anderson County: 58.6 %Anderson County58.6Sumter County: 58.6 %Sumter County58.6Hampton County: 58.6 %Hampton County58.6Laurens County: 58.3 %Laurens County58.3Chesterfield County: 57.9 %Chesterfield County57.9Florence County: 57.9 %Florence County57.9Chester County: 57.8 %Chester County57.8Greenwood County: 57.7 %Greenwood County57.7Williamsburg County: 57.7 %Williamsburg County57.7Aiken County: 57.3 %Aiken County57.3Orangeburg County: 57.2 %Orangeburg County57.2Kershaw County: 57.2 %Kershaw County57.2Bamberg County: 57.2 %Bamberg County57.2Barnwell County: 57.1 %Barnwell County57.1Darlington County: 57.1 %Darlington County57.1Newberry County: 57 %Newberry County57Fairfield County: 57 %Fairfield County57Union County: 56.9 %Union County56.9Abbeville County: 56.8 %Abbeville County56.8Jasper County: 56.7 %Jasper County56.7Dillon County: 56.4 %Dillon County56.4Colleton County: 56.1 %Colleton County56.1Oconee County: 56.1 %Oconee County56.1Marion County: 56 %Marion County56Calhoun County: 55.7 %Calhoun County55.7Lancaster County: 55.6 %Lancaster County55.6Clarendon County: 55.3 %Clarendon County55.3Horry County: 55.1 %Horry County55.1Saluda County: 55.1 %Saluda County55.1Beaufort County: 53 %Beaufort County53Georgetown County: 52.2 %Georgetown County52.2McCormick County: 51.4 %McCormick County51.4Richland County: 63.9 %Richland County63.9Pickens County: 63.8 %Pickens County63.8Charleston County: 62.4 %Charleston County62.4Edgefield County: 61.5 %Edgefield County61.5Marlboro County: 61.3 %Marlboro County61.3Berkeley County: 60.8 %Berkeley County60.8Lee County: 60.5 %Lee County60.5York County: 60.1 %York County60.1Greenville County: 60 %Greenville County60Spartanburg County: 59.9 %Spartanburg County59.9Dorchester County: 59.7 %Dorchester County59.7Allendale County: 59.4 %Allendale County59.4Cherokee County: 59.3 %Cherokee County59.3Lexington County: 59.2 %Lexington County59.2Anderson County: 58.6 %Anderson County58.6Sumter County: 58.6 %Sumter County58.6Hampton County: 58.6 %Hampton County58.6Laurens County: 58.3 %Laurens County58.3Chesterfield County: 57.9 %Chesterfield County57.9Florence County: 57.9 %Florence County57.9Chester County: 57.8 %Chester County57.8Greenwood County: 57.7 %Greenwood County57.7Williamsburg County: 57.7 %Williamsburg County57.7Aiken County: 57.3 %Aiken County57.3Orangeburg County: 57.2 %Orangeburg County57.2Kershaw County: 57.2 %Kershaw County57.2Bamberg County: 57.2 %Bamberg County57.2Barnwell County: 57.1 %Barnwell County57.1Darlington County: 57.1 %Darlington County57.1Newberry County: 57 %Newberry County57Fairfield County: 57 %Fairfield County57Union County: 56.9 %Union County56.9Abbeville County: 56.8 %Abbeville County56.8Jasper County: 56.7 %Jasper County56.7Dillon County: 56.4 %Dillon County56.4Colleton County: 56.1 %Colleton County56.1Oconee County: 56.1 %Oconee County56.1Marion County: 56 %Marion County56Calhoun County: 55.7 %Calhoun County55.7Lancaster County: 55.6 %Lancaster County55.6Clarendon County: 55.3 %Clarendon County55.3Horry County: 55.1 %Horry County55.1Saluda County: 55.1 %Saluda County55.1Beaufort County: 53 %Beaufort County53Georgetown County: 52.2 %Georgetown County52.2McCormick County: 51.4 %McCormick County51.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1Richland County63.9-0 pts
2Pickens County63.8-0.2 pts
3Charleston County62.4-0.2 pts
4Edgefield County61.5+0.3 pts
5Marlboro County61.3-0.6 pts
6Berkeley County60.8-0.2 pts
7Lee County60.5-0.4 pts
8York County60.1-0.1 pts
9Greenville County60-0.2 pts
10Spartanburg County59.9-0 pts
11Dorchester County59.7-0.2 pts
12Allendale County59.4-0.4 pts
13Cherokee County59.3-0.2 pts
14Lexington County59.2-0.1 pts
15Anderson County58.60 pts
16Sumter County58.6-0.3 pts
17Hampton County58.6-0.6 pts
18Laurens County58.3-0.1 pts
19Chesterfield County57.9-0.3 pts
20Florence County57.9-0.3 pts
21Chester County57.8-0.4 pts
22Greenwood County57.7-0.3 pts
23Williamsburg County57.7-0.3 pts
24Aiken County57.3-0.3 pts
25Orangeburg County57.2-0.3 pts
26Kershaw County57.2-0.3 pts
27Bamberg County57.2-0.2 pts
28Barnwell County57.1-0.8 pts
29Darlington County57.1-0.4 pts
30Newberry County57-0.1 pts
31Fairfield County57-0.6 pts
32Union County56.9-0.4 pts
33Abbeville County56.8-0.3 pts
34Jasper County56.7-0.4 pts
35Dillon County56.4-0.5 pts
36Colleton County56.1-0.2 pts
37Oconee County56.1-0.1 pts
38Marion County56-0.4 pts
39Calhoun County55.7-0.4 pts
40Lancaster County55.6+0.1 pts
41Clarendon County55.3+0.2 pts
42Horry County55.1-0.4 pts
43Saluda County55.1-0.5 pts
44Beaufort County53+0.4 pts
45Georgetown County52.2-0.3 pts
46McCormick County51.4+0.3 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

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. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. 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). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in South Carolina by population aged 18 to 64, 2021) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in South Carolina by population aged 18 to 64, 2021. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in South Carolina by population aged 18 to 64, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in South Carolina by population aged 18 to 64, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2021,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in South Carolina by population aged 18 to 64, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in South Carolina by population aged 18 to 64, 2021
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

Richland County, with 63.9% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

McCormick County, with 51.4% 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, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in South Carolina: more rankings