RANKING · 2024 ACS · 46 SHOWN OF 46

Largest households, South Carolina counties

South Carolina counties ranked by average household size (2024 ACS). This list covers the 46 counties in South Carolina that qualify, ranked against each other statewide. The median across all 46 is 2.42. Biggest climber in the top 100 since 2020: Barnwell County, SC, up 26 places to #12.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01▲11Bamberg County, SCSC12,7962.61+2%

02▼1Dorchester County, SCSC178,3972.61−3%

03▼1Berkeley County, SCSC274,6662.59−5%

04▲10Spartanburg County, SCSC380,8572.58+2%

05▲3Edgefield County, SCSC29,8082.56−2%

06▲3Lancaster County, SCSC114,2962.56+2%

07▲3York County, SCSC306,8872.55−1%

08▼1Dillon County, SCSC27,4582.54−5%

09▲6Florence County, SCSC138,5042.530%

10▲3Kershaw County, SCSC73,1662.53−1%

11▼7Cherokee County, SCSC58,2752.52−3%

12▲26Barnwell County, SCSC20,6532.48−8%

13▲5Lexington County, SCSC317,5882.480%

14▲9Sumter County, SCSC105,0672.48−7%

15▲6Anderson County, SCSC219,9302.47−1%

16▼5Hampton County, SCSC18,1742.47−10%

17▲3Laurens County, SCSC71,8482.46−2%

18▲11Chesterfield County, SCSC44,7402.45−8%

19▼13Saluda County, SCSC19,6802.45−14%

20▲13Aiken County, SCSC181,5152.45−2%

21▲5Chester County, SCSC33,0012.43−8%

22▼6Greenville County, SCSC583,1252.43−2%

23▲5Newberry County, SCSC39,5612.42−5%

24▲8Pickens County, SCSC139,1982.41−2%

25▲6Abbeville County, SCSC24,8362.41−3%

26▼9Clarendon County, SCSC31,0432.40−8%

27▼5Darlington County, SCSC62,8882.40−8%

28▼9Marlboro County, SCSC25,4882.40−10%

29▼5Orangeburg County, SCSC83,1772.40−6%

30▲9Georgetown County, SCSC65,9122.37−11%

31▲3Greenwood County, SCSC70,3792.37−8%

32▼5Horry County, SCSC427,5512.37+4%

33▼28Jasper County, SCSC38,5332.36−19%

34▲1Lee County, SCSC15,7302.35−12%

35▼5Richland County, SCSC434,9562.35−3%

36▼33Marion County, SCSC28,2422.34−13%

37▼1Colleton County, SCSC39,3822.33−8%

38▲5Williamsburg County, SCSC29,6622.33−23%

39▲1Oconee County, SCSC83,7752.31−5%

40▼3Charleston County, SCSC436,2002.29−5%

41▼16Beaufort County, SCSC204,4332.28−2%

42▲2Union County, SCSC26,7992.28−2%

43▼1Calhoun County, SCSC14,1882.26−9%

44▼3Fairfield County, SCSC20,3402.26−12%

45▲1McCormick County, SCSC10,2152.12−2%

46▼1Allendale County, SCSC7,3552.08−21%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES