RANKING · 2024 ACS · 67 SHOWN OF 67

Highest Irish population share, Pennsylvania counties

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

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS 2010

01Delaware County, PAPA580,93722.2%−6.4 pts

02Bucks County, PAPA647,82822.0%−4.8 pts

03Lackawanna County, PAPA216,50221.9%−5.5 pts

04Chester County, PAPA557,11620.8%−3.5 pts

05Pike County, PAPA62,80819.8%−2.6 pts

06Susquehanna County, PAPA38,23719.5%−1.9 pts

07Butler County, PAPA200,16919.1%−2.6 pts

08Montgomery County, PAPA877,64318.9%−3.7 pts

09Wayne County, PAPA51,70318.6%−5.6 pts

10Lawrence County, PAPA83,91117.8%+0.5 pts

11Beaver County, PAPA166,03217.5%−1.6 pts

12Blair County, PAPA119,54117.0%−3.1 pts

13Allegheny County, PAPA1,225,03516.9%−3.4 pts

14Venango County, PAPA49,34616.8%−1.1 pts

15Schuylkill County, PAPA145,08516.5%−3.0 pts

16Westmoreland County, PAPA349,32416.4%−1.6 pts

17Armstrong County, PAPA63,69816.4%−3.0 pts

18Washington County, PAPA210,80216.2%−2.8 pts

19Luzerne County, PAPA332,12616.0%−4.0 pts

20Cambria County, PAPA128,96816.0%−2.5 pts

21Fayette County, PAPA123,02115.9%−1.3 pts

22Wyoming County, PAPA25,79015.0%−4.8 pts

23Crawford County, PAPA81,79215.0%−3.0 pts

24Carbon County, PAPA65,86815.0%−1.4 pts

25Mercer County, PAPA107,86014.5%−2.3 pts

26Sullivan County, PAPA5,85614.5%−6.1 pts

27Monroe County, PAPA167,17914.3%−2.7 pts

28McKean County, PAPA38,98414.3%−2.9 pts

29Huntingdon County, PAPA43,00114.3%−2.5 pts

30Greene County, PAPA33,88514.2%−4.9 pts

31Centre County, PAPA157,39314.1%+0.7 pts

32Cameron County, PAPA4,21114.1%−0.3 pts

33Bradford County, PAPA59,60013.5%−3.0 pts

34Elk County, PAPA29,92613.5%−2.0 pts

35Warren County, PAPA37,03813.4%−1.0 pts

36Clarion County, PAPA36,68013.3%−2.9 pts

37Erie County, PAPA265,83213.2%−4.8 pts

38Lycoming County, PAPA112,58713.2%−1.6 pts

39Cumberland County, PAPA277,27013.0%−2.8 pts

40Indiana County, PAPA82,87812.8%−7.4 pts

41Forest County, PAPA6,61412.7%−0.5 pts

42Adams County, PAPA107,59412.5%−1.9 pts

43Potter County, PAPA15,89712.4%−2.5 pts

44Perry County, PAPA46,80612.4%−2.4 pts

45Clearfield County, PAPA78,10012.2%−0.5 pts

46York County, PAPA473,19712.0%−1.0 pts

47Mifflin County, PAPA46,12712.0%−0.9 pts

48Clinton County, PAPA37,87012.0%−2.9 pts

49Jefferson County, PAPA43,25511.8%−2.9 pts

50Northampton County, PAPA324,41111.7%−3.0 pts

51Tioga County, PAPA40,50211.6%−2.1 pts

52Northumberland County, PAPA89,92011.1%−0.5 pts

53Bedford County, PAPA47,48011.0%−0.9 pts

54Dauphin County, PAPA293,35110.7%−1.5 pts

55Franklin County, PAPA160,65210.6%−2.1 pts

56Lancaster County, PAPA563,15910.6%−0.8 pts

57Montour County, PAPA17,86810.5%−0.9 pts

58Berks County, PAPA440,07210.1%−2.8 pts

59Lehigh County, PAPA384,38310.0%−2.4 pts

60Somerset County, PAPA72,0049.7%−2.5 pts

61Lebanon County, PAPA146,3809.6%−2.0 pts

62Philadelphia County, PAPA1,574,2819.6%−3.4 pts

63Columbia County, PAPA66,1939.5%−3.9 pts

64Fulton County, PAPA14,4839.5%−4.4 pts

65Juniata County, PAPA23,4039.1%−3.4 pts

66Snyder County, PAPA39,6558.1%−1.2 pts

67Union County, PAPA42,3136.9%−3.8 pts

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