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. The median across all 67 is 43.7. Biggest climber in the top 100 since 2020: Forest County, PA, up 16 places to #5.

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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%

03▲1Pike County, PAPA62,80849.4+25%

04▼1Wayne County, PAPA51,70349.2+21%

05▲16Forest County, PAPA6,61448.7+10%

06Susquehanna County, PAPA38,23748.6+23%

07Elk County, PAPA29,92648.4+23%

08▼3Potter County, PAPA15,89748.4+24%

09▲2Venango County, PAPA49,34647.6+18%

10▼1Bedford County, PAPA47,48047.5+20%

11▲1Armstrong County, PAPA63,69847.2+17%

12▼2Westmoreland County, PAPA349,32447.2+14%

13▼5Warren County, PAPA37,03847.1+16%

14▼1Somerset County, PAPA72,00446.9+17%

15▼1Carbon County, PAPA65,86846.3+14%

16▲7Fulton County, PAPA14,48346.1+21%

17▼1Cambria County, PAPA128,96845.6+11%

18▼1Clearfield County, PAPA78,10045.4+16%

19▼4Fayette County, PAPA123,02145.4+13%

20▲4Mercer County, PAPA107,86045.1+14%

21▲7Tioga County, PAPA40,50245.1+17%

22Wyoming County, PAPA25,79045.1+19%

23▼3Lawrence County, PAPA83,91144.9+11%

24▼6Beaver County, PAPA166,03244.7+10%

25▲4Northumberland County, PAPA89,92044.5+9%

26▲4Bucks County, PAPA647,82844.2+17%

27▼2Washington County, PAPA210,80244.2+8%

28▲15Monroe County, PAPA167,17944.1+19%

29▲3Crawford County, PAPA81,79244.0+15%

30▲3Huntingdon County, PAPA43,00144.0+17%

31▲4McKean County, PAPA38,98444.0+14%

32▼6Jefferson County, PAPA43,25544.0+11%

33▲5Perry County, PAPA46,80643.8+17%

34▼7Adams County, PAPA107,59443.7+18%

35▼16Schuylkill County, PAPA145,08543.7+7%

36▼2Bradford County, PAPA59,60043.6+12%

37▼1Mifflin County, PAPA46,12743.4+12%

38▲3Butler County, PAPA200,16943.4+15%

39▼2Greene County, PAPA33,88543.3+13%

40▲4Juniata County, PAPA23,40343.3+15%

41▼10Blair County, PAPA119,54143.1+9%

42▼2Montour County, PAPA17,86842.9+8%

43▲4Franklin County, PAPA160,65242.1+10%

44▲2Northampton County, PAPA324,41142.0+9%

45▼3Luzerne County, PAPA332,12642.0+3%

46▼1Lackawanna County, PAPA216,50241.9+4%

47▼8Clarion County, PAPA36,68041.7+15%

48▲1Lycoming County, PAPA112,58741.4+8%

49▲4Montgomery County, PAPA877,64341.2+8%

50▼2Lebanon County, PAPA146,38041.1+6%

51▲3York County, PAPA473,19741.1+9%

52▼2Columbia County, PAPA66,19341.0+9%

53▲10Union County, PAPA42,31341.0+15%

54▲3Chester County, PAPA557,11640.8+11%

55▲5Allegheny County, PAPA1,225,03540.6+3%

56▲3Snyder County, PAPA39,65540.6+11%

57▼2Cumberland County, PAPA277,27040.2+6%

58▼2Erie County, PAPA265,83240.2+11%

59▼7Indiana County, PAPA82,87840.0+10%

60▼2Berks County, PAPA440,07239.9+7%

61▼10Clinton County, PAPA37,87039.8+5%

62▼1Lehigh County, PAPA384,38339.6+3%

63▲2Lancaster County, PAPA563,15939.4+9%

64▼2Dauphin County, PAPA293,35139.4+4%

65▼1Delaware County, PAPA580,93739.1+5%

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

67Centre County, PAPA157,39334.2+19%

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