RANKING · 2025 ESTIMATES · 46 SHOWN OF 46

Most densely populated, South Carolina counties

South Carolina counties ranked by residents per square mile (2025). This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide. The median across all 46 is 81. Biggest climber in the top 100 since 2020: Jasper County, SC, up 7 places to #28.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Greenville County, SCSC583,125742+54%

02Richland County, SCSC434,956574+36%

03Charleston County, SCSC436,200475+41%

04▲2Spartanburg County, SCSC380,857471+50%

05▼1Lexington County, SCSC317,588454+47%

06▼1York County, SCSC306,887451+86%

07▲1Horry County, SCSC427,551377+117%

08▼1Beaufort County, SCSC204,433355+69%

09▲1Dorchester County, SCSC178,397314+85%

10▼1Anderson County, SCSC219,930308+33%

11Pickens County, SCSC139,198280+26%

12Berkeley County, SCSC274,666249+93%

13Lancaster County, SCSC114,296208+86%

14Florence County, SCSC138,504173+10%

15▲1Aiken County, SCSC181,515170+27%

16▼1Sumter County, SCSC105,0671580%

17Greenwood County, SCSC70,379154+6%

18Cherokee County, SCSC58,275148+11%

19Oconee County, SCSC83,775134+27%

20Darlington County, SCSC62,888112−7%

21Laurens County, SCSC71,848101+3%

22Kershaw County, SCSC73,166101+39%

23Georgetown County, SCSC65,91281+18%

24Orangeburg County, SCSC83,17775−9%

25Dillon County, SCSC27,45868−11%

26Newberry County, SCSC39,56163+10%

27▲6Edgefield County, SCSC29,80860+21%

28▲7Jasper County, SCSC38,53359+86%

29▼2Marion County, SCSC28,24258−20%

30▼2Chester County, SCSC33,00157−3%

31▼1Chesterfield County, SCSC44,74056+5%

32▼3Marlboro County, SCSC25,48853−12%

33▼2Union County, SCSC26,79952−10%

34▼2Clarendon County, SCSC31,04351−4%

35▼1Abbeville County, SCSC24,83651−5%

36Saluda County, SCSC19,68043+3%

37Lee County, SCSC15,73038−22%

38Barnwell County, SCSC20,65338−12%

39▲1Colleton County, SCSC39,38237+3%

40▼1Calhoun County, SCSC14,18837−7%

41Bamberg County, SCSC12,79633−23%

42▲1Hampton County, SCSC18,17432−15%

43▼1Williamsburg County, SCSC29,66232−20%

44Fairfield County, SCSC20,34030−13%

45McCormick County, SCSC10,21528+3%

46Allendale County, SCSC7,35518−34%

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