RANKING · 2010 CENSUS · 67 SHOWN OF 67

Highest Irish population share, Pennsylvania counties · 2010

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.

PennsylvaniaAll states All rankings

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, PAPA580,93728.7%–

02Lackawanna County, PAPA216,50227.4%–

03Bucks County, PAPA647,82826.7%–

04Chester County, PAPA557,11624.3%–

05Wayne County, PAPA51,70324.3%–

06Montgomery County, PAPA877,64322.6%–

07Pike County, PAPA62,80822.4%–

08Butler County, PAPA200,16921.7%–

09Susquehanna County, PAPA38,23721.4%–

10Sullivan County, PAPA5,85620.6%–

11Allegheny County, PAPA1,225,03520.3%–

12Indiana County, PAPA82,87820.2%–

13Blair County, PAPA119,54120.1%–

14Luzerne County, PAPA332,12620.0%–

15Wyoming County, PAPA25,79019.8%–

16Schuylkill County, PAPA145,08519.6%–

17Armstrong County, PAPA63,69819.4%–

18Greene County, PAPA33,88519.1%–

19Beaver County, PAPA166,03219.1%–

20Washington County, PAPA210,80219.0%–

21Cambria County, PAPA128,96818.5%–

22Westmoreland County, PAPA349,32418.0%–

23Erie County, PAPA265,83218.0%–

24Crawford County, PAPA81,79218.0%–

25Venango County, PAPA49,34617.9%–

26Lawrence County, PAPA83,91117.3%–

27McKean County, PAPA38,98417.3%–

28Fayette County, PAPA123,02117.2%–

29Monroe County, PAPA167,17917.0%–

30Mercer County, PAPA107,86016.8%–

31Huntingdon County, PAPA43,00116.8%–

32Bradford County, PAPA59,60016.5%–

33Carbon County, PAPA65,86816.4%–

34Clarion County, PAPA36,68016.2%–

35Cumberland County, PAPA277,27015.8%–

36Elk County, PAPA29,92615.5%–

37Potter County, PAPA15,89714.9%–

38Clinton County, PAPA37,87014.9%–

39Perry County, PAPA46,80614.8%–

40Lycoming County, PAPA112,58714.8%–

41Jefferson County, PAPA43,25514.7%–

42Northampton County, PAPA324,41114.6%–

43Cameron County, PAPA4,21114.4%–

44Adams County, PAPA107,59414.4%–

45Warren County, PAPA37,03814.3%–

46Fulton County, PAPA14,48313.9%–

47Tioga County, PAPA40,50213.7%–

48Columbia County, PAPA66,19313.5%–

49Centre County, PAPA157,39313.4%–

50Forest County, PAPA6,61413.1%–

51York County, PAPA473,19713.0%–

52Philadelphia County, PAPA1,574,28113.0%–

53Mifflin County, PAPA46,12712.9%–

54Berks County, PAPA440,07212.8%–

55Franklin County, PAPA160,65212.8%–

56Clearfield County, PAPA78,10012.6%–

57Juniata County, PAPA23,40312.5%–

58Lehigh County, PAPA384,38312.4%–

59Dauphin County, PAPA293,35112.2%–

60Somerset County, PAPA72,00412.1%–

61Bedford County, PAPA47,48011.9%–

62Lebanon County, PAPA146,38011.6%–

63Northumberland County, PAPA89,92011.5%–

64Lancaster County, PAPA563,15911.4%–

65Montour County, PAPA17,86811.4%–

66Union County, PAPA42,31310.8%–

67Snyder County, PAPA39,6559.3%–

SHOWING 1–67 OF 67

Download CSV (full list, 67 rows)

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