RANKING · 1990 CENSUS · 67 SHOWN OF 67

Oldest housing stock, Pennsylvania counties · 1990

Pennsylvania counties ranked by oldest median year of construction (1990 ACS). This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide. The median across all 67 is 1956.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01Lackawanna County, PAPA216,5021939–

02Northumberland County, PAPA89,9201939–

03Schuylkill County, PAPA145,0851939–

04Philadelphia County, PAPA1,574,2811939–

05Luzerne County, PAPA332,1261940–

06McKean County, PAPA38,9841943–

07Cambria County, PAPA128,9681946–

08Blair County, PAPA119,5411947–

09Cameron County, PAPA4,2111948–

10Fayette County, PAPA123,0211948–

11Greene County, PAPA33,8851949–

12Lawrence County, PAPA83,9111949–

13Allegheny County, PAPA1,225,0351951–

14Armstrong County, PAPA63,6981951–

15Venango County, PAPA49,3461951–

16Lycoming County, PAPA112,5871951–

17Delaware County, PAPA580,9371952–

18Jefferson County, PAPA43,2551952–

19Beaver County, PAPA166,0321953–

20Berks County, PAPA440,0721953–

21Carbon County, PAPA65,8681953–

22Clearfield County, PAPA78,1001953–

23Washington County, PAPA210,8021953–

24Columbia County, PAPA66,1931954–

25Elk County, PAPA29,9261954–

26Erie County, PAPA265,8321954–

27Mercer County, PAPA107,8601954–

28Mifflin County, PAPA46,1271954–

29Sullivan County, PAPA5,8561954–

30Warren County, PAPA37,0381954–

31Northampton County, PAPA324,4111955–

32Bradford County, PAPA59,6001956–

33Crawford County, PAPA81,7921956–

34Somerset County, PAPA72,0041956–

35Lebanon County, PAPA146,3801956–

36Clarion County, PAPA36,6801957–

37Lehigh County, PAPA384,3831957–

38Westmoreland County, PAPA349,3241957–

39Dauphin County, PAPA293,3511958–

40Clinton County, PAPA37,8701959–

41Potter County, PAPA15,8971959–

42Juniata County, PAPA23,4031959–

43Montgomery County, PAPA877,6431959–

44Bedford County, PAPA47,4801960–

45Huntingdon County, PAPA43,0011960–

46Montour County, PAPA17,8681960–

47Tioga County, PAPA40,5021960–

48Indiana County, PAPA82,8781961–

49Lancaster County, PAPA563,1591961–

50York County, PAPA473,1971961–

51Butler County, PAPA200,1691962–

52Franklin County, PAPA160,6521962–

53Union County, PAPA42,3131963–

54Susquehanna County, PAPA38,2371963–

55Adams County, PAPA107,5941964–

56Cumberland County, PAPA277,2701964–

57Snyder County, PAPA39,6551964–

58Wyoming County, PAPA25,7901964–

59Bucks County, PAPA647,8281965–

60Perry County, PAPA46,8061965–

61Fulton County, PAPA14,4831966–

62Centre County, PAPA157,3931967–

63Forest County, PAPA6,6141967–

64Chester County, PAPA557,1161968–

65Wayne County, PAPA51,7031973–

66Monroe County, PAPA167,1791976–

67Pike County, PAPA62,8081976–

SHOWING 1–67 OF 67

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