RANKING · 2024 ACS · 67 SHOWN OF 67

Highest Scotch-Irish population share, Pennsylvania counties

Pennsylvania counties ranked by the share of all residents who are Scotch-Irish ancestry (2024 American Community Survey). A concentration measure: Scotch-Irish residents as a percentage of total population. This list covers the 67 counties in Pennsylvania that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2010

01Lawrence County, PAPA83,9112.8%−3.0 pts

02Washington County, PAPA210,8022.5%−3.0 pts

03Butler County, PAPA200,1692.4%−2.4 pts

04Venango County, PAPA49,3462.0%−2.4 pts

05Indiana County, PAPA82,8781.9%−2.2 pts

06Huntingdon County, PAPA43,0011.9%−0.9 pts

07Mercer County, PAPA107,8601.8%−2.5 pts

08Armstrong County, PAPA63,6981.8%−1.8 pts

09Beaver County, PAPA166,0321.7%−2.1 pts

10Greene County, PAPA33,8851.7%−3.2 pts

11Crawford County, PAPA81,7921.7%−2.1 pts

12Perry County, PAPA46,8061.7%−0.8 pts

13Warren County, PAPA37,0381.6%−1.4 pts

14Jefferson County, PAPA43,2551.6%−1.4 pts

15Franklin County, PAPA160,6521.5%−1.3 pts

16Westmoreland County, PAPA349,3241.4%−1.8 pts

17Allegheny County, PAPA1,225,0351.3%−1.1 pts

18Clarion County, PAPA36,6801.3%−2.1 pts

19Montour County, PAPA17,8681.3%+0.0 pts

20Forest County, PAPA6,6141.1%−1.8 pts

21Cumberland County, PAPA277,2701.1%−1.7 pts

22Mifflin County, PAPA46,1271.1%−1.7 pts

23Centre County, PAPA157,3931.1%−1.0 pts

24York County, PAPA473,1971.1%−1.0 pts

25Chester County, PAPA557,1161.0%−1.5 pts

26Tioga County, PAPA40,5021.0%−1.0 pts

27Adams County, PAPA107,5941.0%−0.9 pts

28Juniata County, PAPA23,4031.0%−1.4 pts

29Erie County, PAPA265,8320.9%−1.6 pts

30Fayette County, PAPA123,0210.9%−1.0 pts

31Clearfield County, PAPA78,1000.9%−1.0 pts

32Bradford County, PAPA59,6000.9%−0.9 pts

33Lycoming County, PAPA112,5870.9%−0.6 pts

34Blair County, PAPA119,5410.8%−1.7 pts

35Fulton County, PAPA14,4830.8%−1.0 pts

36Lancaster County, PAPA563,1590.8%−1.1 pts

37Potter County, PAPA15,8970.8%−0.9 pts

38Cambria County, PAPA128,9680.8%−0.9 pts

39Bucks County, PAPA647,8280.8%−1.1 pts

40Dauphin County, PAPA293,3510.8%−1.2 pts

41McKean County, PAPA38,9840.8%−1.2 pts

42Union County, PAPA42,3130.8%−0.6 pts

43Somerset County, PAPA72,0040.7%−0.9 pts

44Montgomery County, PAPA877,6430.7%−1.1 pts

45Elk County, PAPA29,9260.6%−0.9 pts

46Delaware County, PAPA580,9370.6%−1.2 pts

47Bedford County, PAPA47,4800.6%−1.3 pts

48Susquehanna County, PAPA38,2370.5%−1.3 pts

49Wayne County, PAPA51,7030.5%−0.7 pts

50Pike County, PAPA62,8080.5%−0.5 pts

51Northampton County, PAPA324,4110.5%−0.7 pts

52Berks County, PAPA440,0720.5%−0.6 pts

53Carbon County, PAPA65,8680.5%−0.4 pts

54Snyder County, PAPA39,6550.5%−0.4 pts

55Northumberland County, PAPA89,9200.5%−0.6 pts

56Lebanon County, PAPA146,3800.4%−1.1 pts

57Wyoming County, PAPA25,7900.4%−0.9 pts

58Sullivan County, PAPA5,8560.4%−1.9 pts

59Columbia County, PAPA66,1930.4%−0.6 pts

60Luzerne County, PAPA332,1260.4%−0.4 pts

61Lehigh County, PAPA384,3830.3%−0.7 pts

62Clinton County, PAPA37,8700.3%−1.6 pts

63Monroe County, PAPA167,1790.3%−0.9 pts

64Schuylkill County, PAPA145,0850.3%−0.2 pts

65Philadelphia County, PAPA1,574,2810.3%−0.4 pts

66Cameron County, PAPA4,2110.2%−2.1 pts

67Lackawanna County, PAPA216,5020.2%−0.7 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES