RANKING · 1990 CENSUS · 67 SHOWN OF 67

Oldest by median age, Pennsylvania counties · 1990

Pennsylvania counties ranked by median age of residents (1990 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 –

01Forest County, PAPA6,61440.8–

02Schuylkill County, PAPA145,08538.6–

03Luzerne County, PAPA332,12638.2–

04Sullivan County, PAPA5,85638.0–

05Northumberland County, PAPA89,92037.8–

06Lackawanna County, PAPA216,50237.8–

07Westmoreland County, PAPA349,32437.7–

08Cameron County, PAPA4,21137.6–

09Washington County, PAPA210,80237.5–

10Cambria County, PAPA128,96837.4–

11Carbon County, PAPA65,86837.4–

12Lawrence County, PAPA83,91137.3–

13Beaver County, PAPA166,03237.2–

14Fayette County, PAPA123,02137.0–

15Allegheny County, PAPA1,225,03536.8–

16Armstrong County, PAPA63,69836.5–

17Warren County, PAPA37,03836.4–

18Somerset County, PAPA72,00436.3–

19Mercer County, PAPA107,86036.3–

20Wayne County, PAPA51,70336.3–

21Blair County, PAPA119,54136.2–

22McKean County, PAPA38,98435.9–

23Pike County, PAPA62,80835.9–

24Montgomery County, PAPA877,64335.9–

25Venango County, PAPA49,34635.8–

26Jefferson County, PAPA43,25535.8–

27Potter County, PAPA15,89735.7–

28Lehigh County, PAPA384,38335.7–

29Mifflin County, PAPA46,12735.7–

30Clearfield County, PAPA78,10035.6–

31Bedford County, PAPA47,48035.6–

32Berks County, PAPA440,07235.5–

33Elk County, PAPA29,92635.4–

34Montour County, PAPA17,86835.2–

35Greene County, PAPA33,88535.2–

36Franklin County, PAPA160,65235.1–

37Lebanon County, PAPA146,38035.1–

38Dauphin County, PAPA293,35135.0–

39Northampton County, PAPA324,41134.9–

40Susquehanna County, PAPA38,23734.9–

41Clinton County, PAPA37,87034.8–

42Lycoming County, PAPA112,58734.8–

43Bradford County, PAPA59,60034.6–

44Juniata County, PAPA23,40334.6–

45Delaware County, PAPA580,93734.6–

46Crawford County, PAPA81,79234.6–

47Cumberland County, PAPA277,27034.6–

48York County, PAPA473,19734.5–

49Huntingdon County, PAPA43,00134.3–

50Tioga County, PAPA40,50234.2–

51Fulton County, PAPA14,48334.1–

52Monroe County, PAPA167,17934.1–

53Columbia County, PAPA66,19334.1–

54Butler County, PAPA200,16934.0–

55Chester County, PAPA557,11633.9–

56Bucks County, PAPA647,82833.8–

57Perry County, PAPA46,80633.5–

58Adams County, PAPA107,59433.5–

59Philadelphia County, PAPA1,574,28133.4–

60Wyoming County, PAPA25,79033.1–

61Erie County, PAPA265,83233.0–

62Lancaster County, PAPA563,15932.8–

63Snyder County, PAPA39,65532.6–

64Union County, PAPA42,31332.5–

65Clarion County, PAPA36,68032.3–

66Indiana County, PAPA82,87831.9–

67Centre County, PAPA157,39327.0–

SHOWING 1–67 OF 67

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