RANKING · 2024 ACS · 67 SHOWN OF 67

Largest households, Pennsylvania counties

Pennsylvania counties ranked by average household size (2024 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide. The median across all 67 is 2.34. Biggest climber in the top 100 since 2020: Schuylkill County, PA, up 21 places to #30.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01Monroe County, PAPA167,1792.69−2%

02Chester County, PAPA557,1162.60−1%

03▲1Berks County, PAPA440,0722.570%

04▲3Bucks County, PAPA647,8282.56−3%

05▲1Delaware County, PAPA580,9372.56−1%

06▼1Juniata County, PAPA23,4032.56−5%

07▲2Lehigh County, PAPA384,3832.56+2%

08▼5Lancaster County, PAPA563,1592.55−2%

09▲3Montgomery County, PAPA877,6432.520%

10▲3York County, PAPA473,1972.510%

11▲9Perry County, PAPA46,8062.500%

12▼4Snyder County, PAPA39,6552.50−3%

13▲3Adams County, PAPA107,5942.49−2%

14▼4Northampton County, PAPA324,4112.49−1%

15▲6Pike County, PAPA62,8082.48−3%

16▼5Lebanon County, PAPA146,3802.470%

17▲12Mifflin County, PAPA46,1272.45+1%

18Franklin County, PAPA160,6522.450%

19▲14Susquehanna County, PAPA38,2372.44−2%

20▲8Bradford County, PAPA59,6002.40−3%

21▲13Cumberland County, PAPA277,2702.40+4%

22▲19Indiana County, PAPA82,8782.39−2%

23▼1Tioga County, PAPA40,5022.39+2%

24▲3Bedford County, PAPA47,4802.38−4%

25▲5Carbon County, PAPA65,8682.37−3%

26▲9Huntingdon County, PAPA43,0012.37−2%

27▲12Butler County, PAPA200,1692.37−4%

28▲8Clarion County, PAPA36,6802.36−3%

29▲20Lackawanna County, PAPA216,5022.35−1%

30▲21Schuylkill County, PAPA145,0852.350%

31▲12Jefferson County, PAPA43,2552.35−5%

32▲6Luzerne County, PAPA332,1262.350%

33▼14Clinton County, PAPA37,8702.34−2%

34▲8Somerset County, PAPA72,0042.34−5%

35▲13Columbia County, PAPA66,1932.33−3%

36▼4Dauphin County, PAPA293,3512.33−4%

37▲10Blair County, PAPA119,5412.32−3%

38▼15Centre County, PAPA157,3932.32−4%

39▲6Crawford County, PAPA81,7922.32−4%

40▼3Erie County, PAPA265,8322.31−6%

41▲13Warren County, PAPA37,0382.31−1%

42▼11Washington County, PAPA210,8022.31−5%

43▼18Wyoming County, PAPA25,7902.31−8%

44▼20Union County, PAPA42,3132.30−2%

45▼31Wayne County, PAPA51,7032.30−6%

46▼2Lycoming County, PAPA112,5872.30−4%

47▲12Northumberland County, PAPA89,9202.29−1%

48▲9Lawrence County, PAPA83,9112.29−6%

49▲1Armstrong County, PAPA63,6982.28−4%

50▼10Clearfield County, PAPA78,1002.28−4%

51▼25Fulton County, PAPA14,4832.28−10%

52▼35Potter County, PAPA15,8972.28−4%

53Venango County, PAPA49,3462.28−5%

54▲10Elk County, PAPA29,9262.27−3%

55▲1Beaver County, PAPA166,0322.26−5%

56▲2McKean County, PAPA38,9842.26−5%

57▼42Philadelphia County, PAPA1,574,2812.26−11%

58▲9Forest County, PAPA6,6142.24−17%

59▲3Cambria County, PAPA128,9682.23−4%

60Westmoreland County, PAPA349,3242.23−5%

61▼9Greene County, PAPA33,8852.21−14%

62▼1Mercer County, PAPA107,8602.21−6%

63Allegheny County, PAPA1,225,0352.20−3%

64▼18Montour County, PAPA17,8682.20−7%

65▼10Fayette County, PAPA123,0212.20−9%

66▼1Sullivan County, PAPA5,8562.18−13%

67▼1Cameron County, PAPA4,2111.98−16%

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