RANKING · 2020 CENSUS · 67 SHOWN OF 67

Youngest by median age, Pennsylvania counties · 2020

Pennsylvania counties with the youngest median age (2020 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide. The median across all 67 is 44.1.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Centre County, PAPA157,39331.5+10%

02Philadelphia County, PAPA1,574,28134.8+2%

03Lancaster County, PAPA563,15939.3+9%

04Delaware County, PAPA580,93739.4+5%

05Union County, PAPA42,31339.5+10%

06Dauphin County, PAPA293,35139.8+5%

07Lehigh County, PAPA384,38340.1+5%

08Allegheny County, PAPA1,225,03540.2+2%

09Snyder County, PAPA39,65540.3+10%

10Berks County, PAPA440,07240.4+8%

11Chester County, PAPA557,11640.5+10%

12Erie County, PAPA265,83240.6+12%

13Cumberland County, PAPA277,27040.8+7%

14Montgomery County, PAPA877,64341.4+8%

15York County, PAPA473,19741.4+10%

16Clinton County, PAPA37,87041.5+10%

17Indiana County, PAPA82,87841.5+15%

18Columbia County, PAPA66,19341.6+11%

19Lebanon County, PAPA146,38041.8+8%

20Lycoming County, PAPA112,58741.8+9%

21Franklin County, PAPA160,65242.2+10%

22Lackawanna County, PAPA216,50242.6+6%

23Northampton County, PAPA324,41142.6+11%

24Monroe County, PAPA167,17943.2+16%

25Juniata County, PAPA23,40343.2+15%

26Luzerne County, PAPA332,12643.4+6%

27Clarion County, PAPA36,68043.6+20%

28Montour County, PAPA17,86843.6+10%

29Butler County, PAPA200,16943.6+16%

30Greene County, PAPA33,88543.7+14%

31Perry County, PAPA46,80643.7+17%

32McKean County, PAPA38,98444.0+14%

33Mifflin County, PAPA46,12744.0+13%

34Bradford County, PAPA59,60044.1+13%

35Crawford County, PAPA81,79244.2+16%

36Huntingdon County, PAPA43,00144.2+17%

37Blair County, PAPA119,54144.3+12%

38Bucks County, PAPA647,82844.4+18%

39Northumberland County, PAPA89,92044.5+9%

40Adams County, PAPA107,59444.7+21%

41Tioga County, PAPA40,50244.7+16%

42Jefferson County, PAPA43,25545.0+13%

43Mercer County, PAPA107,86045.1+14%

44Washington County, PAPA210,80245.1+11%

45Fulton County, PAPA14,48345.3+19%

46Forest County, PAPA6,61445.4+3%

47Wyoming County, PAPA25,79045.4+20%

48Lawrence County, PAPA83,91145.5+12%

49Beaver County, PAPA166,03245.6+12%

50Schuylkill County, PAPA145,08545.6+11%

51Clearfield County, PAPA78,10045.9+17%

52Cambria County, PAPA128,96846.0+12%

53Fayette County, PAPA123,02146.3+15%

54Carbon County, PAPA65,86846.7+15%

55Somerset County, PAPA72,00447.0+17%

56Armstrong County, PAPA63,69847.3+17%

57Venango County, PAPA49,34647.4+18%

58Bedford County, PAPA47,48047.6+21%

59Westmoreland County, PAPA349,32447.6+15%

60Warren County, PAPA37,03847.8+18%

61Elk County, PAPA29,92648.0+22%

62Susquehanna County, PAPA38,23748.2+22%

63Potter County, PAPA15,89748.6+24%

64Pike County, PAPA62,80848.7+23%

65Wayne County, PAPA51,70349.1+20%

66Cameron County, PAPA4,21151.3+24%

67Sullivan County, PAPA5,85653.2+24%

SHOWING 1–67 OF 67

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS