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 2018, at 65.1%. McCormick County had the lowest, at 52.5%. The median was 59% and the figure for South Carolina was 60.1%. Source: the U.S. Census Bureau.

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Highest65.1Richland County
Lowest52.5McCormick County
Median5946 counties
South Carolina60.1History

Map of counties, 2018

Abbeville County: 57.6 %Aiken County: 58.5 %Allendale County: 61.9 %Anderson County: 58.9 %Bamberg County: 58.5 %Barnwell County: 58.8 %Beaufort County: 53.6 %Berkeley County: 61.9 %Calhoun County: 57.2 %Charleston County: 63.5 %Cherokee County: 59.8 %Chester County: 59.1 %Chesterfield County: 59.4 %Clarendon County: 56.7 %Colleton County: 57.7 %Darlington County: 58.8 %Dillon County: 58.2 %Dorchester County: 60.5 %Edgefield County: 62 %Fairfield County: 59 %Florence County: 59.2 %Georgetown County: 53.6 %Greenville County: 60.9 %Greenwood County: 59.2 %Hampton County: 61.5 %Horry County: 57.2 %Jasper County: 58.7 %Kershaw County: 58.4 %Lancaster County: 56.4 %Laurens County: 59.5 %Lee County: 61.4 %Lexington County: 60.1 %McCormick County: 52.5 %Marion County: 57.7 %Marlboro County: 63.1 %Newberry County: 58.1 %Oconee County: 56.8 %Orangeburg County: 58.8 %Pickens County: 64.4 %Richland County: 65.1 %Saluda County: 56.8 %Spartanburg County: 60.3 %Sumter County: 60 %Union County: 58.3 %Williamsburg County: 59.2 %York County: 60.7 %
  • Under 57
  • 57 to 58
  • 58 to 59
  • 59 to 60
  • 60 to 61
  • 61 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Richland County: 65.1 %Richland County65.1Pickens County: 64.4 %Pickens County64.4Charleston County: 63.5 %Charleston County63.5Marlboro County: 63.1 %Marlboro County63.1Edgefield County: 62 %Edgefield County62Berkeley County: 61.9 %Berkeley County61.9Allendale County: 61.9 %Allendale County61.9Hampton County: 61.5 %Hampton County61.5Lee County: 61.4 %Lee County61.4Greenville County: 60.9 %Greenville County60.9York County: 60.7 %York County60.7Dorchester County: 60.5 %Dorchester County60.5Spartanburg County: 60.3 %Spartanburg County60.3Lexington County: 60.1 %Lexington County60.1Sumter County: 60 %Sumter County60Cherokee County: 59.8 %Cherokee County59.8Laurens County: 59.5 %Laurens County59.5Chesterfield County: 59.4 %Chesterfield County59.4Florence County: 59.2 %Florence County59.2Williamsburg County: 59.2 %Williamsburg County59.2Greenwood County: 59.2 %Greenwood County59.2Chester County: 59.1 %Chester County59.1Fairfield County: 59 %Fairfield County59Anderson County: 58.9 %Anderson County58.9Darlington County: 58.8 %Darlington County58.8Orangeburg County: 58.8 %Orangeburg County58.8Barnwell County: 58.8 %Barnwell County58.8Jasper County: 58.7 %Jasper County58.7Bamberg County: 58.5 %Bamberg County58.5Aiken County: 58.5 %Aiken County58.5Kershaw County: 58.4 %Kershaw County58.4Union County: 58.3 %Union County58.3Dillon County: 58.2 %Dillon County58.2Newberry County: 58.1 %Newberry County58.1Marion County: 57.7 %Marion County57.7Colleton County: 57.7 %Colleton County57.7Abbeville County: 57.6 %Abbeville County57.6Horry County: 57.2 %Horry County57.2Calhoun County: 57.2 %Calhoun County57.2Saluda County: 56.8 %Saluda County56.8Oconee County: 56.8 %Oconee County56.8Clarendon County: 56.7 %Clarendon County56.7Lancaster County: 56.4 %Lancaster County56.4Beaufort County: 53.6 %Beaufort County53.6Georgetown County: 53.6 %Georgetown County53.6McCormick County: 52.5 %McCormick County52.5Richland County: 65.1 %Richland County65.1Pickens County: 64.4 %Pickens County64.4Charleston County: 63.5 %Charleston County63.5Marlboro County: 63.1 %Marlboro County63.1Edgefield County: 62 %Edgefield County62Berkeley County: 61.9 %Berkeley County61.9Allendale County: 61.9 %Allendale County61.9Hampton County: 61.5 %Hampton County61.5Lee County: 61.4 %Lee County61.4Greenville County: 60.9 %Greenville County60.9York County: 60.7 %York County60.7Dorchester County: 60.5 %Dorchester County60.5Spartanburg County: 60.3 %Spartanburg County60.3Lexington County: 60.1 %Lexington County60.1Sumter County: 60 %Sumter County60Cherokee County: 59.8 %Cherokee County59.8Laurens County: 59.5 %Laurens County59.5Chesterfield County: 59.4 %Chesterfield County59.4Florence County: 59.2 %Florence County59.2Williamsburg County: 59.2 %Williamsburg County59.2Greenwood County: 59.2 %Greenwood County59.2Chester County: 59.1 %Chester County59.1Fairfield County: 59 %Fairfield County59Anderson County: 58.9 %Anderson County58.9Darlington County: 58.8 %Darlington County58.8Orangeburg County: 58.8 %Orangeburg County58.8Barnwell County: 58.8 %Barnwell County58.8Jasper County: 58.7 %Jasper County58.7Bamberg County: 58.5 %Bamberg County58.5Aiken County: 58.5 %Aiken County58.5Kershaw County: 58.4 %Kershaw County58.4Union County: 58.3 %Union County58.3Dillon County: 58.2 %Dillon County58.2Newberry County: 58.1 %Newberry County58.1Marion County: 57.7 %Marion County57.7Colleton County: 57.7 %Colleton County57.7Abbeville County: 57.6 %Abbeville County57.6Horry County: 57.2 %Horry County57.2Calhoun County: 57.2 %Calhoun County57.2Saluda County: 56.8 %Saluda County56.8Oconee County: 56.8 %Oconee County56.8Clarendon County: 56.7 %Clarendon County56.7Lancaster County: 56.4 %Lancaster County56.4Beaufort County: 53.6 %Beaufort County53.6Georgetown County: 53.6 %Georgetown County53.6McCormick County: 52.5 %McCormick County52.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Richland County65.1-0.5 pts
2Pickens County64.4-0 pts
3Charleston County63.5-0.4 pts
4Marlboro County63.1-0.1 pts
5Edgefield County62-0.1 pts
6Berkeley County61.9-0.2 pts
7Allendale County61.9-0.5 pts
8Hampton County61.5-0 pts
9Lee County61.4+0.3 pts
10Greenville County60.9-0.3 pts
11York County60.7-0.3 pts
12Dorchester County60.5-0.3 pts
13Spartanburg County60.3-0.2 pts
14Lexington County60.1-0.4 pts
15Sumter County60-0.2 pts
16Cherokee County59.8-0.2 pts
17Laurens County59.5-0.3 pts
18Chesterfield County59.4-0.1 pts
19Florence County59.2-0.4 pts
19Williamsburg County59.2+0.2 pts
21Greenwood County59.2-0.2 pts
22Chester County59.1-0.2 pts
23Fairfield County59-1.1 pts
24Anderson County58.9-0.1 pts
25Darlington County58.8-0.2 pts
26Orangeburg County58.8-0.3 pts
27Barnwell County58.8-0.3 pts
28Jasper County58.7-0.8 pts
29Bamberg County58.5-0.3 pts
30Aiken County58.5-0.4 pts
31Kershaw County58.4-0.1 pts
32Union County58.3-0.2 pts
33Dillon County58.2-0.3 pts
34Newberry County58.1-0.2 pts
35Marion County57.7-0 pts
36Colleton County57.7-0.4 pts
37Abbeville County57.6-0.4 pts
38Horry County57.2-0.5 pts
39Calhoun County57.2-0.6 pts
40Saluda County56.8-0.7 pts
41Oconee County56.8-0.2 pts
42Clarendon County56.7-0.7 pts
43Lancaster County56.4-0.3 pts
44Beaufort County53.6-0.5 pts
45Georgetown County53.6-0.5 pts
46McCormick County52.5-1.3 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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.

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, 2018 [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=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2018,
  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, 2018}},
  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=2018. 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, 2018
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=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/south-carolina-counties?period=2018.
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 65.1% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

McCormick County, with 52.5% in 2018.

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