RANKING · 2025 ESTIMATES · 46 SHOWN OF 46

Most population gained, South Carolina counties

South Carolina counties that added the most residents from the 2020 census to 2025, by raw count of people rather than percentage. This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide. The median across all 46 is +1,467. Biggest climber in the top 100 since 2020: Chesterfield County, SC, up 18 places to #23.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Horry County, SCSC427,551+76,522+46%

02Greenville County, SCSC583,125+57,591−3%

03▲3Spartanburg County, SCSC380,857+52,860+96%

04▲1Berkeley County, SCSC274,666+44,805+223%

05▼2Charleston County, SCSC436,200+27,965+87%

06▼2York County, SCSC306,887+24,797−25%

07▲1Lexington County, SCSC317,588+23,597−51%

08▼1Richland County, SCSC434,956+18,809−46%

09▲2Lancaster County, SCSC114,296+18,280+167%

10Beaufort County, SCSC204,433+17,316−50%

11▼2Dorchester County, SCSC178,397+16,857+26%

12Anderson County, SCSC219,930+16,212−21%

13▲1Aiken County, SCSC181,515+12,707−41%

14▲2Jasper County, SCSC38,533+9,742+88%

15▼2Pickens County, SCSC139,198+7,794−54%

16▲1Kershaw County, SCSC73,166+7,763−14%

17▼2Oconee County, SCSC83,775+5,168−41%

18▲1Laurens County, SCSC71,848+4,309−62%

19▲11Edgefield County, SCSC29,808+4,151−33%

20▼2Georgetown County, SCSC65,912+2,508−74%

21▼1Cherokee County, SCSC58,275+2,059−74%

22▼1Newberry County, SCSC39,561+1,842−37%

23▲18Chesterfield County, SCSC44,740+1,467−65%

24▼2Florence County, SCSC138,504+1,445−87%

25▼1Greenwood County, SCSC70,379+1,028−85%

26▲1Saluda County, SCSC19,680+818−71%

27▼4Colleton County, SCSC39,382+778−80%

28▼2Chester County, SCSC33,001+707−63%

29▼4McCormick County, SCSC10,215+689−37%

30▼1Abbeville County, SCSC24,836+541−77%

31▼3Calhoun County, SCSC14,188+69−97%

32▲1Barnwell County, SCSC20,653+64−98%

33▲12Darlington County, SCSC62,888-17−100%

34▲9Clarendon County, SCSC31,043-101−102%

35▲1Hampton County, SCSC18,174-387−112%

36▼5Union County, SCSC26,799-445−2%

37▼5Sumter County, SCSC105,067-489−124%

38▼1Bamberg County, SCSC12,796-515+111%

39Fairfield County, SCSC20,340-608−152%

40▼5Allendale County, SCSC7,355-684+34%

41▼3Lee County, SCSC15,730-801−148%

42Dillon County, SCSC27,458-834−152%

43▲1Marion County, SCSC28,242-941−160%

44▲2Orangeburg County, SCSC83,177-1,046−115%

45▼11Marlboro County, SCSC25,488-1,179+117%

46▼6Williamsburg County, SCSC29,662-1,364−439%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES