RANKING · 2020 CENSUS · 51 SHOWN OF 51

Highest Irish population share, US states · 2020

US states 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. New Hampshire leads at 20.6%. 51 states qualify in total. The top 25 average 13.4%, against an all-states median of 10.2%.

All statesAll rankings

SAME RANKING BYCities Counties Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS 2000

01New Hampshire, NHNH1,394,86820.6%–

02Massachusetts, MAMA7,044,05619.7%–

03Rhode Island, RIRI1,101,80117.2%–

04Maine, MEME1,387,81716.7%–

05Vermont, VTVT647,10616.5%–

06Pennsylvania, PAPA13,018,63915.5%–

07Connecticut, CTCT3,624,50815.0%–

08Delaware, DEDE1,021,19114.2%–

09Montana, MTMT1,116,87513.6%–

10New Jersey, NJNJ9,343,80913.3%–

11Iowa, IAIA3,210,50713.0%–

12West Virginia, WVWV1,778,37312.9%–

13Ohio, OHOH11,810,29312.7%–

14Missouri, MOMO6,191,81412.3%–

15Nebraska, NENE1,978,70711.9%–

16Wyoming, WYWY582,39711.5%–

17Kansas, KSKS2,947,19711.3%–

18Kentucky, KYKY4,534,82411.2%–

19New York, NYNY19,852,36611.1%–

20Illinois, ILIL12,694,79811.0%–

21Oregon, OROR4,254,29311.0%–

22Colorado, COCO5,862,18910.9%–

23Wisconsin, WIWI5,914,87210.6%–

24Indiana, ININ6,851,07310.4%–

25Michigan, MIMI10,077,76110.2%–

26Oklahoma, OKOK4,028,63410.2%–

27South Dakota, SDSD907,42810.1%–

28Washington, WAWA7,816,11610.1%–

29Minnesota, MNMN5,739,44510.0%–

30Maryland, MDMD6,206,0119.8%–

31Alaska, AKAK735,7069.7%–

32Arkansas, ARAR3,049,3919.4%–

33Tennessee, TNTN7,066,3839.3%–

34Idaho, IDID1,934,2629.1%–

35Virginia, VAVA8,705,1709.0%–

36Arizona, AZAZ7,378,8388.6%–

37South Carolina, SCSC5,296,2258.6%–

38Florida, FLFL22,416,0778.4%–

39Nevada, NVNV3,184,6128.1%–

40North Carolina, NCNC10,730,4048.0%–

41Alabama, ALAL5,086,7688.0%–

42North Dakota, NDND784,8417.4%–

43District of Columbia, DCDC681,2947.1%–

44Georgia, GAGA10,940,4077.0%–

45Mississippi, MSMS2,946,7796.8%–

46Louisiana, LALA4,611,9616.5%–

47Texas, TXTX30,188,4246.1%–

48New Mexico, NMNM2,120,2466.1%–

49California, CACA39,287,3775.9%–

50Utah, UTUT3,392,3315.9%–

51Hawaii, HIHI1,445,2354.4%–

SHOWING 1–51 OF 51

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

Frequently asked

Which state has the highest irish share?

New Hampshire ranks #1 with 20.6% (2020 American Community Survey).

What are the top 5 states by irish share?

New Hampshire, Massachusetts, Rhode Island, Maine, Vermont.

How many states are in this ranking?

51 states qualify after filtering for population minimums and data availability. The ranking covers 2020 ACS 5-year data.

How is irish share measured?

Share of all residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2020).