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.

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

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Greenville County, SCSC583,125742–

02Richland County, SCSC434,956574–

03Charleston County, SCSC436,200475–

04Spartanburg County, SCSC380,857471–

05Lexington County, SCSC317,588454–

06York County, SCSC306,887451–

07Horry County, SCSC427,551377–

08Beaufort County, SCSC204,433355–

09Dorchester County, SCSC178,397314–

10Anderson County, SCSC219,930308–

11Pickens County, SCSC139,198280–

12Berkeley County, SCSC274,666249–

13Lancaster County, SCSC114,296208–

14Florence County, SCSC138,504173–

15Aiken County, SCSC181,515170–

16Sumter County, SCSC105,067158–

17Greenwood County, SCSC70,379154–

18Cherokee County, SCSC58,275148–

19Oconee County, SCSC83,775134–

20Darlington County, SCSC62,888112–

21Laurens County, SCSC71,848101–

22Kershaw County, SCSC73,166101–

23Georgetown County, SCSC65,91281–

24Orangeburg County, SCSC83,17775–

25Dillon County, SCSC27,45868–

26Newberry County, SCSC39,56163–

27Edgefield County, SCSC29,80860–

28Jasper County, SCSC38,53359–

29Marion County, SCSC28,24258–

30Chester County, SCSC33,00157–

31Chesterfield County, SCSC44,74056–

32Marlboro County, SCSC25,48853–

33Union County, SCSC26,79952–

34Clarendon County, SCSC31,04351–

35Abbeville County, SCSC24,83651–

36Saluda County, SCSC19,68043–

37Lee County, SCSC15,73038–

38Barnwell County, SCSC20,65338–

39Colleton County, SCSC39,38237–

40Calhoun County, SCSC14,18837–

41Bamberg County, SCSC12,79633–

42Hampton County, SCSC18,17432–

43Williamsburg County, SCSC29,66232–

44Fairfield County, SCSC20,34030–

45McCormick County, SCSC10,21528–

46Allendale County, SCSC7,35518–

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