RANKING · 1990 CENSUS · 46 SHOWN OF 46

Most densely populated, South Carolina counties · 1990

South Carolina counties ranked by residents per square mile (1990). This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide. The median across all 46 is 72.

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SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Greenville County, SCSC583,125407–

02Richland County, SCSC434,956377–

03Charleston County, SCSC436,200321–

04Spartanburg County, SCSC380,857281–

05Lexington County, SCSC317,588240–

06Anderson County, SCSC219,930203–

07York County, SCSC306,887193–

08Pickens County, SCSC139,198189–

09Sumter County, SCSC105,067154–

10Beaufort County, SCSC204,433150–

11Dorchester County, SCSC178,397146–

12Florence County, SCSC138,504143–

13Greenwood County, SCSC70,379131–

14Horry County, SCSC427,551127–

15Berkeley County, SCSC274,666117–

16Cherokee County, SCSC58,275113–

17Aiken County, SCSC181,515113–

18Darlington County, SCSC62,888110–

19Lancaster County, SCSC114,29699–

20Oconee County, SCSC83,77592–

21Laurens County, SCSC71,84881–

22Orangeburg County, SCSC83,17777–

23Dillon County, SCSC27,45872–

24Marion County, SCSC28,24269–

25Marlboro County, SCSC25,48861–

26Kershaw County, SCSC73,16660–

27Union County, SCSC26,79959–

28Georgetown County, SCSC65,91257–

29Chester County, SCSC33,00155–

30Newberry County, SCSC39,56153–

31Abbeville County, SCSC24,83649–

32Chesterfield County, SCSC44,74048–

33Clarendon County, SCSC31,04347–

34Lee County, SCSC15,73045–

35Bamberg County, SCSC12,79643–

36Williamsburg County, SCSC29,66239–

37Barnwell County, SCSC20,65337–

38Edgefield County, SCSC29,80837–

39Saluda County, SCSC19,68036–

40Calhoun County, SCSC14,18833–

41Colleton County, SCSC39,38233–

42Fairfield County, SCSC20,34032–

43Hampton County, SCSC18,17432–

44Allendale County, SCSC7,35529–

45McCormick County, SCSC10,21525–

46Jasper County, SCSC38,53324–

SHOWING 1–46 OF 46

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