RANKING · 2010 CENSUS · 67 SHOWN OF 67

Oldest by median age, Pennsylvania counties · 2010

Pennsylvania counties ranked by median age of residents (2010 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, PAPA5,85649.9+16%

02Cameron County, PAPA4,21148.2+17%

03Wayne County, PAPA51,70345.9+13%

04Elk County, PAPA29,92645.1+14%

05Warren County, PAPA37,03845.1+11%

06Susquehanna County, PAPA38,23745.1+14%

07Westmoreland County, PAPA349,32445.1+9%

08Potter County, PAPA15,89744.9+15%

09Armstrong County, PAPA63,69844.5+10%

10Beaver County, PAPA166,03244.4+9%

11Somerset County, PAPA72,00444.3+10%

12Venango County, PAPA49,34644.3+10%

13Bedford County, PAPA47,48043.9+11%

14Carbon County, PAPA65,86843.9+8%

15Montour County, PAPA17,86843.9+10%

16Cambria County, PAPA128,96843.8+6%

17Pike County, PAPA62,80843.7+10%

18Washington County, PAPA210,80243.6+7%

19Lawrence County, PAPA83,91143.6+8%

20Fayette County, PAPA123,02143.6+8%

21Bradford County, PAPA59,60043.4+12%

22Northumberland County, PAPA89,92043.4+6%

23Schuylkill County, PAPA145,08543.2+6%

24Forest County, PAPA6,61443.0−3%

25Jefferson County, PAPA43,25543.0+8%

26Clearfield County, PAPA78,10042.9+9%

27Mercer County, PAPA107,86042.8+8%

28Mifflin County, PAPA46,12742.5+10%

29Luzerne County, PAPA332,12642.5+4%

30Tioga County, PAPA40,50242.4+10%

31Wyoming County, PAPA25,79042.3+12%

32Blair County, PAPA119,54142.0+6%

33Bucks County, PAPA647,82842.0+11%

34Fulton County, PAPA14,48341.8+9%

35Lackawanna County, PAPA216,50241.8+4%

36Crawford County, PAPA81,79241.7+9%

37McKean County, PAPA38,98441.5+7%

38Butler County, PAPA200,16941.5+10%

39Adams County, PAPA107,59441.3+12%

40Allegheny County, PAPA1,225,03541.3+4%

41Huntingdon County, PAPA43,00141.2+9%

42Greene County, PAPA33,88541.1+8%

43Perry County, PAPA46,80641.1+10%

44Lycoming County, PAPA112,58741.1+7%

45Lebanon County, PAPA146,38041.0+6%

46Northampton County, PAPA324,41140.9+6%

47Juniata County, PAPA23,40340.9+8%

48Montgomery County, PAPA877,64340.6+6%

49Cumberland County, PAPA277,27040.3+6%

50Monroe County, PAPA167,17940.3+8%

51Franklin County, PAPA160,65240.1+5%

52York County, PAPA473,19740.1+6%

53Columbia County, PAPA66,19339.5+5%

54Clarion County, PAPA36,68039.4+9%

55Dauphin County, PAPA293,35139.4+4%

56Lehigh County, PAPA384,38339.4+3%

57Chester County, PAPA557,11639.3+7%

58Snyder County, PAPA39,65539.2+7%

59Berks County, PAPA440,07239.1+5%

60Delaware County, PAPA580,93738.7+3%

61Erie County, PAPA265,83238.6+7%

62Clinton County, PAPA37,87038.5+2%

63Union County, PAPA42,31338.5+8%

64Indiana County, PAPA82,87838.3+6%

65Lancaster County, PAPA563,15938.2+6%

66Philadelphia County, PAPA1,574,28133.5−2%

67Centre County, PAPA157,39328.7+0%

SHOWING 1–67 OF 67

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