RANKING · 2020 CENSUS · 67 SHOWN OF 67

Highest Irish population share, Pennsylvania counties · 2020

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

01Lackawanna County, PAPA216,50225.2%–

02Delaware County, PAPA580,93724.0%–

03Bucks County, PAPA647,82823.9%–

04Pike County, PAPA62,80823.8%–

05Chester County, PAPA557,11621.4%–

06Montgomery County, PAPA877,64320.3%–

07Susquehanna County, PAPA38,23720.2%–

08Sullivan County, PAPA5,85619.9%–

09Butler County, PAPA200,16919.7%–

10Wayne County, PAPA51,70318.9%–

11Schuylkill County, PAPA145,08517.8%–

12Luzerne County, PAPA332,12617.5%–

13Lawrence County, PAPA83,91117.4%–

14Armstrong County, PAPA63,69817.2%–

15Westmoreland County, PAPA349,32417.2%–

16Allegheny County, PAPA1,225,03517.1%–

17Cambria County, PAPA128,96817.1%–

18Wyoming County, PAPA25,79016.8%–

19Blair County, PAPA119,54116.8%–

20Washington County, PAPA210,80216.6%–

21Fayette County, PAPA123,02116.4%–

22Beaver County, PAPA166,03216.3%–

23McKean County, PAPA38,98416.3%–

24Mercer County, PAPA107,86016.1%–

25Venango County, PAPA49,34616.1%–

26Crawford County, PAPA81,79215.9%–

27Erie County, PAPA265,83215.6%–

28Carbon County, PAPA65,86815.5%–

29Clarion County, PAPA36,68015.4%–

30Bradford County, PAPA59,60014.9%–

31Indiana County, PAPA82,87814.9%–

32Greene County, PAPA33,88514.6%–

33Warren County, PAPA37,03814.1%–

34Monroe County, PAPA167,17913.8%–

35Lycoming County, PAPA112,58713.8%–

36Huntingdon County, PAPA43,00113.7%–

37Cumberland County, PAPA277,27013.4%–

38Northampton County, PAPA324,41113.3%–

39Mifflin County, PAPA46,12713.1%–

40Elk County, PAPA29,92612.9%–

41Tioga County, PAPA40,50212.7%–

42Centre County, PAPA157,39312.5%–

43Potter County, PAPA15,89712.5%–

44York County, PAPA473,19712.3%–

45Clinton County, PAPA37,87012.2%–

46Jefferson County, PAPA43,25512.1%–

47Adams County, PAPA107,59412.1%–

48Clearfield County, PAPA78,10011.4%–

49Somerset County, PAPA72,00411.1%–

50Columbia County, PAPA66,19310.8%–

51Franklin County, PAPA160,65210.8%–

52Perry County, PAPA46,80610.7%–

53Lehigh County, PAPA384,38310.6%–

54Fulton County, PAPA14,48310.4%–

55Northumberland County, PAPA89,92010.4%–

56Forest County, PAPA6,61410.4%–

57Berks County, PAPA440,07210.4%–

58Bedford County, PAPA47,48010.3%–

59Lancaster County, PAPA563,15910.2%–

60Philadelphia County, PAPA1,574,28110.1%–

61Montour County, PAPA17,86810.1%–

62Dauphin County, PAPA293,3519.8%–

63Lebanon County, PAPA146,3809.8%–

64Cameron County, PAPA4,2119.5%–

65Juniata County, PAPA23,4039.2%–

66Snyder County, PAPA39,6558.8%–

67Union County, PAPA42,3138.7%–

SHOWING 1–67 OF 67

Download CSV (full list, 67 rows)

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