RANKING · 2010 CENSUS · 51 SHOWN OF 51

Highest Irish population share, US states · 2010

US states ranked by the share of all residents who are Irish ancestry (2010 American Community Survey). A concentration measure: Irish residents as a percentage of total population. Massachusetts leads at 23.4%. 51 states qualify in total. The top 25 average 15.8%, against an all-states median of 12.3%.

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SAME RANKING BYCities Counties Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS –

USUnited States308,745,53811.7%–

01Massachusetts, MAMA7,044,05623.4%–

02New Hampshire, NHNH1,394,86822.3%–

03Rhode Island, RIRI1,101,80120.1%–

04Delaware, DEDE1,021,19118.2%–

05Maine, MEME1,387,81717.9%–

06Vermont, VTVT647,10617.9%–

07Pennsylvania, PAPA13,018,63917.8%–

08Connecticut, CTCT3,624,50817.3%–

09Montana, MTMT1,116,87516.1%–

10New Jersey, NJNJ9,343,80915.7%–

11Iowa, IAIA3,210,50715.4%–

12West Virginia, WVWV1,778,37315.1%–

13Missouri, MOMO6,191,81414.8%–

14Nebraska, NENE1,978,70714.7%–

15Wyoming, WYWY582,39714.6%–

16Ohio, OHOH11,810,29314.5%–

17Kansas, KSKS2,947,19713.8%–

18Kentucky, KYKY4,534,82413.7%–

19New York, NYNY19,852,36613.3%–

20Arkansas, ARAR3,049,39113.3%–

21Oklahoma, OKOK4,028,63413.0%–

22Oregon, OROR4,254,29313.0%–

23Illinois, ILIL12,694,79812.9%–

24Indiana, ININ6,851,07312.9%–

25Colorado, COCO5,862,18912.9%–

26Alaska, AKAK735,70612.3%–

27Washington, WAWA7,816,11612.3%–

28Maryland, MDMD6,206,01112.2%–

29Michigan, MIMI10,077,76111.9%–

30Wisconsin, WIWI5,914,87211.7%–

31Minnesota, MNMN5,739,44511.4%–

32Tennessee, TNTN7,066,38311.3%–

33South Dakota, SDSD907,42811.1%–

34Idaho, IDID1,934,26210.8%–

35Virginia, VAVA8,705,17010.8%–

36Florida, FLFL22,416,07710.7%–

37Arizona, AZAZ7,378,83810.7%–

38Alabama, ALAL5,086,76810.4%–

39Nevada, NVNV3,184,61210.3%–

40Mississippi, MSMS2,946,7799.7%–

41South Carolina, SCSC5,296,2259.7%–

42North Carolina, NCNC10,730,4049.5%–

43Georgia, GAGA10,940,4079.1%–

44North Dakota, NDND784,8418.1%–

45Louisiana, LALA4,611,9618.1%–

46Texas, TXTX30,188,4247.9%–

47New Mexico, NMNM2,120,2467.5%–

48California, CACA39,287,3777.5%–

49District of Columbia, DCDC681,2946.8%–

50Utah, UTUT3,392,3316.2%–

51Hawaii, HIHI1,445,2355.0%–

SHOWING 1–51 OF 51

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which state has the highest irish share?

Massachusetts ranks #1 with 23.4% (2010 Decennial Census).

What are the top 5 states by irish share?

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

How many states are in this ranking?

51 states qualify after filtering for population minimums and data availability. The ranking covers 2010 Decennial Census data.

How is irish share measured?

Share of all residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2010 Decennial Census.