RANKING · 2010 CENSUS · 67 SHOWN OF 67

Youngest by median age, Pennsylvania counties · 2010

Pennsylvania counties with the youngest median age (2010 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide. The median across all 67 is 41.8.

Flip the list · Oldest by median age, US counties →

PennsylvaniaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Centre County, PAPA157,39328.70%

02Philadelphia County, PAPA1,574,28133.5−2%

03Lancaster County, PAPA563,15938.2+6%

04Indiana County, PAPA82,87838.3+6%

05Clinton County, PAPA37,87038.5+2%

06Union County, PAPA42,31338.5+8%

07Erie County, PAPA265,83238.6+7%

08Delaware County, PAPA580,93738.7+3%

09Berks County, PAPA440,07239.1+5%

10Snyder County, PAPA39,65539.2+7%

11Chester County, PAPA557,11639.3+7%

12Clarion County, PAPA36,68039.4+9%

13Dauphin County, PAPA293,35139.4+4%

14Lehigh County, PAPA384,38339.4+3%

15Columbia County, PAPA66,19339.5+5%

16Franklin County, PAPA160,65240.1+5%

17York County, PAPA473,19740.1+6%

18Cumberland County, PAPA277,27040.3+6%

19Monroe County, PAPA167,17940.3+8%

20Montgomery County, PAPA877,64340.6+6%

21Northampton County, PAPA324,41140.9+6%

22Juniata County, PAPA23,40340.9+8%

23Lebanon County, PAPA146,38041.0+6%

24Greene County, PAPA33,88541.1+8%

25Perry County, PAPA46,80641.1+10%

26Lycoming County, PAPA112,58741.1+7%

27Huntingdon County, PAPA43,00141.2+9%

28Adams County, PAPA107,59441.3+12%

29Allegheny County, PAPA1,225,03541.3+4%

30McKean County, PAPA38,98441.5+7%

31Butler County, PAPA200,16941.5+10%

32Crawford County, PAPA81,79241.7+9%

33Fulton County, PAPA14,48341.8+9%

34Lackawanna County, PAPA216,50241.8+4%

35Blair County, PAPA119,54142.0+6%

36Bucks County, PAPA647,82842.0+11%

37Wyoming County, PAPA25,79042.3+12%

38Tioga County, PAPA40,50242.4+10%

39Mifflin County, PAPA46,12742.5+10%

40Luzerne County, PAPA332,12642.5+4%

41Mercer County, PAPA107,86042.8+8%

42Clearfield County, PAPA78,10042.9+9%

43Forest County, PAPA6,61443.0−3%

44Jefferson County, PAPA43,25543.0+8%

45Schuylkill County, PAPA145,08543.2+6%

46Bradford County, PAPA59,60043.4+12%

47Northumberland County, PAPA89,92043.4+6%

48Washington County, PAPA210,80243.6+7%

49Lawrence County, PAPA83,91143.6+8%

50Fayette County, PAPA123,02143.6+8%

51Pike County, PAPA62,80843.7+10%

52Cambria County, PAPA128,96843.8+6%

53Bedford County, PAPA47,48043.9+11%

54Carbon County, PAPA65,86843.9+8%

55Montour County, PAPA17,86843.9+10%

56Somerset County, PAPA72,00444.3+10%

57Venango County, PAPA49,34644.3+10%

58Beaver County, PAPA166,03244.4+9%

59Armstrong County, PAPA63,69844.5+10%

60Potter County, PAPA15,89744.9+15%

61Elk County, PAPA29,92645.1+14%

62Warren County, PAPA37,03845.1+11%

63Susquehanna County, PAPA38,23745.1+14%

64Westmoreland County, PAPA349,32445.1+9%

65Wayne County, PAPA51,70345.9+13%

66Cameron County, PAPA4,21148.2+17%

67Sullivan County, PAPA5,85649.9+16%

SHOWING 1–67 OF 67

Download CSV (full list, 67 rows)

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