RANKING · 2020 CENSUS · 67 SHOWN OF 67

Oldest by median age, Pennsylvania counties · 2020

Pennsylvania counties ranked by median age of residents (2020 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, PAPA5,85653.2+24%

02Cameron County, PAPA4,21151.3+24%

03Wayne County, PAPA51,70349.1+20%

04Pike County, PAPA62,80848.7+23%

05Potter County, PAPA15,89748.6+24%

06Susquehanna County, PAPA38,23748.2+22%

07Elk County, PAPA29,92648.0+22%

08Warren County, PAPA37,03847.8+18%

09Bedford County, PAPA47,48047.6+21%

10Westmoreland County, PAPA349,32447.6+15%

11Venango County, PAPA49,34647.4+18%

12Armstrong County, PAPA63,69847.3+17%

13Somerset County, PAPA72,00447.0+17%

14Carbon County, PAPA65,86846.7+15%

15Fayette County, PAPA123,02146.3+15%

16Cambria County, PAPA128,96846.0+12%

17Clearfield County, PAPA78,10045.9+17%

18Beaver County, PAPA166,03245.6+12%

19Schuylkill County, PAPA145,08545.6+11%

20Lawrence County, PAPA83,91145.5+12%

21Forest County, PAPA6,61445.4+3%

22Wyoming County, PAPA25,79045.4+20%

23Fulton County, PAPA14,48345.3+19%

24Mercer County, PAPA107,86045.1+14%

25Washington County, PAPA210,80245.1+11%

26Jefferson County, PAPA43,25545.0+13%

27Adams County, PAPA107,59444.7+21%

28Tioga County, PAPA40,50244.7+16%

29Northumberland County, PAPA89,92044.5+9%

30Bucks County, PAPA647,82844.4+18%

31Blair County, PAPA119,54144.3+12%

32Crawford County, PAPA81,79244.2+16%

33Huntingdon County, PAPA43,00144.2+17%

34Bradford County, PAPA59,60044.1+13%

35McKean County, PAPA38,98444.0+14%

36Mifflin County, PAPA46,12744.0+13%

37Greene County, PAPA33,88543.7+14%

38Perry County, PAPA46,80643.7+17%

39Clarion County, PAPA36,68043.6+20%

40Montour County, PAPA17,86843.6+10%

41Butler County, PAPA200,16943.6+16%

42Luzerne County, PAPA332,12643.4+6%

43Monroe County, PAPA167,17943.2+16%

44Juniata County, PAPA23,40343.2+15%

45Lackawanna County, PAPA216,50242.6+6%

46Northampton County, PAPA324,41142.6+11%

47Franklin County, PAPA160,65242.2+10%

48Lebanon County, PAPA146,38041.8+8%

49Lycoming County, PAPA112,58741.8+9%

50Columbia County, PAPA66,19341.6+11%

51Clinton County, PAPA37,87041.5+10%

52Indiana County, PAPA82,87841.5+15%

53Montgomery County, PAPA877,64341.4+8%

54York County, PAPA473,19741.4+10%

55Cumberland County, PAPA277,27040.8+7%

56Erie County, PAPA265,83240.6+12%

57Chester County, PAPA557,11640.5+10%

58Berks County, PAPA440,07240.4+8%

59Snyder County, PAPA39,65540.3+10%

60Allegheny County, PAPA1,225,03540.2+2%

61Lehigh County, PAPA384,38340.1+5%

62Dauphin County, PAPA293,35139.8+5%

63Union County, PAPA42,31339.5+10%

64Delaware County, PAPA580,93739.4+5%

65Lancaster County, PAPA563,15939.3+9%

66Philadelphia County, PAPA1,574,28134.8+2%

67Centre County, PAPA157,39331.5+10%

SHOWING 1–67 OF 67

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS