Counties in South Carolina by median age on 1 July (US county estimates)

McCormick County had the highest median age on 1 July (US county estimates) of 46 counties in 2021, at 59.1 years. Richland County had the lowest, at 35.7 years. The median was 42.8 years. Source: the U.S. Census Bureau.

Highest59.1McCormick County

Lowest35.7Richland County

Median42.846 counties

All counties, 2021

years. Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2021 years	Change on 2020
1	McCormick County	59.1	+0.1
2	Georgetown County	52.6	+0.5
3	Fairfield County	50.5	+0.5
4	Horry County	49.6	+0.6
5	Calhoun County	48.9	-0.1
6	Beaufort County	48.2	+0.8
7	Allendale County	47.5	+0.6
7	Oconee County	47.5	+0.4
9	Clarendon County	46.8	-0.3
10	Williamsburg County	45.8	+0.2
11	Lee County	45.6	+0.3
12	Abbeville County	45.1	-0.2
13	Bamberg County	45	+0.2
14	Union County	44.9	-0.1
15	Jasper County	44.7	+1.7
16	Colleton County	44.6	-0.1
17	Saluda County	44.4	0
18	Marion County	44.2	0
19	Edgefield County	44.1	-0.4
20	Hampton County	43.3	+0.2
21	Chester County	43	-0.1
21	Newberry County	43	0
23	Lancaster County	42.9	-0.2
24	Chesterfield County	42.6	-0.1
25	Darlington County	42.4	-0.3
25	Marlboro County	42.4	+0.1
27	Orangeburg County	42.3	+0.3
28	Aiken County	42.2	0
29	Kershaw County	42	-0.1
29	Laurens County	42	-0.1
31	Barnwell County	41.9	-0.3
32	Anderson County	41.1	0
33	Cherokee County	40.7	-0.1
34	Dillon County	40.5	0
35	Greenwood County	40.4	+0.3
36	Florence County	40.3	-0.1
37	Lexington County	39.8	0
38	York County	39.2	+0.1
39	Charleston County	38.8	+0.4
40	Greenville County	38.7	+0.1
41	Spartanburg County	38.6	-0.1
41	Sumter County	38.6	-0.1
43	Dorchester County	38.2	+0.2
44	Berkeley County	36.9	+0.3
45	Pickens County	36.2	+0.2
46	Richland County	35.7	+0.2

Other periods

About this ranking

Age that divides the resident population of a US county into two halves of equal size on 1 July, from Census Bureau population estimates calculated by single year of age.

Counties only: the county file has no state or national medians, and medians cannot be added up. A single-year estimate, unlike median_age, which for US places is a five-year American Community Survey estimate.

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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage (Counties in South Carolina by median age on 1 July (US county estimates), 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in South Carolina by median age on 1 July (US county estimates), 2021. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Counties in South Carolina by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/south-carolina-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in South Carolina by median age on 1 July (US county estimates), 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/median-age-july-1-us-counties/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: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in South Carolina by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/south-carolina-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in South Carolina by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/south-carolina-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/south-carolina-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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 median age on 1 July (US county estimates)?

McCormick County, with 59.1 years in 2021, according to the U.S. Census Bureau.

Which county has the lowest median age on 1 July (US county estimates)?

Richland County, with 35.7 years 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.