RANKING · 2025 ESTIMATES · 46 SHOWN OF 46

Largest by population, South Carolina counties

The most populous South Carolina counties as of the 2025 population estimates. This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Greenville County, SCSC583,125+54%

02Charleston County, SCSC436,200+41%

03Richland County, SCSC434,956+36%

04Horry County, SCSC427,551+117%

05Spartanburg County, SCSC380,857+50%

06Lexington County, SCSC317,588+47%

07York County, SCSC306,887+86%

08Berkeley County, SCSC274,666+93%

09Anderson County, SCSC219,930+33%

10Beaufort County, SCSC204,433+69%

11Aiken County, SCSC181,515+27%

12Dorchester County, SCSC178,397+85%

13Pickens County, SCSC139,198+26%

14Florence County, SCSC138,504+10%

15Lancaster County, SCSC114,296+86%

16Sumter County, SCSC105,067+0%

17Oconee County, SCSC83,775+27%

18Orangeburg County, SCSC83,177−9%

19Kershaw County, SCSC73,166+39%

20Laurens County, SCSC71,848+3%

21Greenwood County, SCSC70,379+6%

22Georgetown County, SCSC65,912+18%

23Darlington County, SCSC62,888−7%

24Cherokee County, SCSC58,275+11%

25Chesterfield County, SCSC44,740+5%

26Newberry County, SCSC39,561+10%

27Colleton County, SCSC39,382+3%

28Jasper County, SCSC38,533+86%

29Chester County, SCSC33,001−3%

30Clarendon County, SCSC31,043−4%

31Edgefield County, SCSC29,808+21%

32Williamsburg County, SCSC29,662−20%

33Marion County, SCSC28,242−20%

34Dillon County, SCSC27,458−11%

35Union County, SCSC26,799−10%

36Marlboro County, SCSC25,488−12%

37Abbeville County, SCSC24,836−5%

38Barnwell County, SCSC20,653−12%

39Fairfield County, SCSC20,340−13%

40Saluda County, SCSC19,680+3%

41Hampton County, SCSC18,174−15%

42Lee County, SCSC15,730−22%

43Calhoun County, SCSC14,188−7%

44Bamberg County, SCSC12,796−23%

45McCormick County, SCSC10,215+3%

46Allendale County, SCSC7,355−34%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES