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 (2023 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

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS 2000

01Delaware County, PAPA580,93722.2%–

02Bucks County, PAPA647,82822.0%–

03Lackawanna County, PAPA216,50221.9%–

04Chester County, PAPA557,11620.8%–

05Pike County, PAPA62,80819.8%–

06Susquehanna County, PAPA38,23719.5%–

07Butler County, PAPA200,16919.1%–

08Montgomery County, PAPA877,64318.9%–

09Wayne County, PAPA51,70318.6%–

10Lawrence County, PAPA83,91117.8%–

11Beaver County, PAPA166,03217.5%–

12Blair County, PAPA119,54117.0%–

13Allegheny County, PAPA1,225,03516.9%–

14Venango County, PAPA49,34616.8%–

15Schuylkill County, PAPA145,08516.5%–

16Westmoreland County, PAPA349,32416.4%–

17Armstrong County, PAPA63,69816.4%–

18Washington County, PAPA210,80216.2%–

19Luzerne County, PAPA332,12616.0%–

20Cambria County, PAPA128,96816.0%–

21Fayette County, PAPA123,02115.9%–

22Wyoming County, PAPA25,79015.0%–

23Crawford County, PAPA81,79215.0%–

24Carbon County, PAPA65,86815.0%–

25Mercer County, PAPA107,86014.5%–

26Sullivan County, PAPA5,85614.5%–

27Monroe County, PAPA167,17914.3%–

28McKean County, PAPA38,98414.3%–

29Huntingdon County, PAPA43,00114.3%–

30Greene County, PAPA33,88514.2%–

31Centre County, PAPA157,39314.1%–

32Cameron County, PAPA4,21114.1%–

33Bradford County, PAPA59,60013.5%–

34Elk County, PAPA29,92613.5%–

35Warren County, PAPA37,03813.4%–

36Clarion County, PAPA36,68013.3%–

37Erie County, PAPA265,83213.2%–

38Lycoming County, PAPA112,58713.2%–

39Cumberland County, PAPA277,27013.0%–

40Indiana County, PAPA82,87812.8%–

41Forest County, PAPA6,61412.7%–

42Adams County, PAPA107,59412.5%–

43Potter County, PAPA15,89712.4%–

44Perry County, PAPA46,80612.4%–

45Clearfield County, PAPA78,10012.2%–

46York County, PAPA473,19712.0%–

47Mifflin County, PAPA46,12712.0%–

48Clinton County, PAPA37,87012.0%–

49Jefferson County, PAPA43,25511.8%–

50Northampton County, PAPA324,41111.7%–

51Tioga County, PAPA40,50211.6%–

52Northumberland County, PAPA89,92011.1%–

53Bedford County, PAPA47,48011.0%–

54Dauphin County, PAPA293,35110.7%–

55Franklin County, PAPA160,65210.6%–

56Lancaster County, PAPA563,15910.6%–

57Montour County, PAPA17,86810.5%–

58Berks County, PAPA440,07210.1%–

59Lehigh County, PAPA384,38310.0%–

60Somerset County, PAPA72,0049.7%–

61Lebanon County, PAPA146,3809.6%–

62Philadelphia County, PAPA1,574,2819.6%–

63Columbia County, PAPA66,1939.5%–

64Fulton County, PAPA14,4839.5%–

65Juniata County, PAPA23,4039.1%–

66Snyder County, PAPA39,6558.1%–

67Union County, PAPA42,3136.9%–

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES