RANKING · 2024 ACS · 67 SHOWN OF 67

Oldest by median age, Pennsylvania counties

Pennsylvania counties ranked by median age of residents (2024 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Sullivan County, PAPA5,85655.9+30%

02Cameron County, PAPA4,21153.0+28%

03Pike County, PAPA62,80849.4+25%

04Wayne County, PAPA51,70349.2+21%

05Forest County, PAPA6,61448.7+10%

06Susquehanna County, PAPA38,23748.6+23%

07Elk County, PAPA29,92648.4+23%

08Potter County, PAPA15,89748.4+24%

09Venango County, PAPA49,34647.6+18%

10Bedford County, PAPA47,48047.5+20%

11Armstrong County, PAPA63,69847.2+17%

12Westmoreland County, PAPA349,32447.2+14%

13Warren County, PAPA37,03847.1+16%

14Somerset County, PAPA72,00446.9+17%

15Carbon County, PAPA65,86846.3+14%

16Fulton County, PAPA14,48346.1+21%

17Cambria County, PAPA128,96845.6+11%

18Clearfield County, PAPA78,10045.4+16%

19Fayette County, PAPA123,02145.4+13%

20Mercer County, PAPA107,86045.1+14%

21Tioga County, PAPA40,50245.1+17%

22Wyoming County, PAPA25,79045.1+19%

23Lawrence County, PAPA83,91144.9+11%

24Beaver County, PAPA166,03244.7+10%

25Northumberland County, PAPA89,92044.5+9%

26Bucks County, PAPA647,82844.2+17%

27Washington County, PAPA210,80244.2+8%

28Monroe County, PAPA167,17944.1+19%

29Crawford County, PAPA81,79244.0+15%

30Huntingdon County, PAPA43,00144.0+17%

31McKean County, PAPA38,98444.0+14%

32Jefferson County, PAPA43,25544.0+11%

33Perry County, PAPA46,80643.8+17%

34Adams County, PAPA107,59443.7+18%

35Schuylkill County, PAPA145,08543.7+7%

36Bradford County, PAPA59,60043.6+12%

37Mifflin County, PAPA46,12743.4+12%

38Butler County, PAPA200,16943.4+15%

39Greene County, PAPA33,88543.3+13%

40Juniata County, PAPA23,40343.3+15%

41Blair County, PAPA119,54143.1+9%

42Montour County, PAPA17,86842.9+8%

43Franklin County, PAPA160,65242.1+10%

44Northampton County, PAPA324,41142.0+9%

45Luzerne County, PAPA332,12642.0+3%

46Lackawanna County, PAPA216,50241.9+4%

47Clarion County, PAPA36,68041.7+15%

48Lycoming County, PAPA112,58741.4+8%

49Montgomery County, PAPA877,64341.2+8%

50Lebanon County, PAPA146,38041.1+6%

51York County, PAPA473,19741.1+9%

52Columbia County, PAPA66,19341.0+9%

53Union County, PAPA42,31341.0+15%

54Chester County, PAPA557,11640.8+11%

55Allegheny County, PAPA1,225,03540.6+3%

56Snyder County, PAPA39,65540.6+11%

57Cumberland County, PAPA277,27040.2+6%

58Erie County, PAPA265,83240.2+11%

59Indiana County, PAPA82,87840.0+10%

60Berks County, PAPA440,07239.9+7%

61Clinton County, PAPA37,87039.8+5%

62Lehigh County, PAPA384,38339.6+3%

63Lancaster County, PAPA563,15939.4+9%

64Dauphin County, PAPA293,35139.4+4%

65Delaware County, PAPA580,93739.1+5%

66Philadelphia County, PAPA1,574,28135.3+3%

67Centre County, PAPA157,39334.2+19%

SHOWING 1–67 OF 67

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES