RANKING · 2010 CENSUS · 46 SHOWN OF 46

Most densely populated, South Carolina counties · 2010

South Carolina counties ranked by residents per square mile (2010). This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide. The median across all 46 is 84.

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SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Greenville County, SCSC583,125574+19%

02Richland County, SCSC434,956508+20%

03Charleston County, SCSC436,200381+13%

04Lexington County, SCSC317,588375+21%

05Spartanburg County, SCSC380,857352+12%

06York County, SCSC306,887332+37%

07Beaufort County, SCSC204,433282+34%

08Anderson County, SCSC219,930262+13%

09Dorchester County, SCSC178,397240+42%

10Pickens County, SCSC139,198240+8%

11Horry County, SCSC427,551238+37%

12Florence County, SCSC138,504171+9%

13Sumter County, SCSC105,067162+3%

14Berkeley County, SCSC274,666161+25%

15Greenwood County, SCSC70,379153+5%

16Aiken County, SCSC181,515150+12%

17Cherokee County, SCSC58,275141+5%

18Lancaster County, SCSC114,296140+25%

19Darlington County, SCSC62,888123+2%

20Oconee County, SCSC83,775119+12%

21Laurens County, SCSC71,84893−4%

22Kershaw County, SCSC73,16685+17%

23Orangeburg County, SCSC83,17784+1%

24Dillon County, SCSC27,45879+4%

25Georgetown County, SCSC65,91274+8%

26Marion County, SCSC28,24268−7%

27Marlboro County, SCSC25,488600%

28Newberry County, SCSC39,56160+4%

29Chesterfield County, SCSC44,74058+9%

30Clarendon County, SCSC31,04358+8%

31Chester County, SCSC33,00157−3%

32Union County, SCSC26,79956−3%

33Edgefield County, SCSC29,80854+10%

34Abbeville County, SCSC24,83652−3%

35Lee County, SCSC15,73047−4%

36Saluda County, SCSC19,68044+4%

37Barnwell County, SCSC20,65341−4%

38Bamberg County, SCSC12,79641−4%

39Calhoun County, SCSC14,188400%

40Jasper County, SCSC38,53338+20%

41Hampton County, SCSC18,17438−1%

42Williamsburg County, SCSC29,66237−8%

43Colleton County, SCSC39,38237+2%

44Fairfield County, SCSC20,34035+2%

45McCormick County, SCSC10,21529+3%

46Allendale County, SCSC7,35526−7%

SHOWING 1–46 OF 46

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS