RANKING · 2020 CENSUS · 51 SHOWN OF 51

Largest Irish population, US states · 2020

US states ranked by the number of residents who are Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. California leads at 2,331,714. 51 states qualify in total. The top 25 average 1,044,549, against an all-states median of 435,703.

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SAME RANKING BYCities Counties Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

USUnited States9.5% of US population331,449,28131,518,129–

01California, CACA39,287,3772,331,714−15%

02New York, NYNY19,852,3662,167,420−16%

03Pennsylvania, PAPA13,018,6391,978,043−12%

04Florida, FLFL22,416,0771,776,586−10%

05Texas, TXTX30,188,4241,745,532−9%

06Ohio, OHOH11,810,2931,480,335−11%

07Illinois, ILIL12,694,7981,401,831−15%

08Massachusetts, MAMA7,044,0561,354,532−11%

09New Jersey, NJNJ9,343,8091,181,301−14%

10Michigan, MIMI10,077,7611,017,747−14%

11North Carolina, NCNC10,730,404832,880−5%

12Virginia, VAVA8,705,170767,238−9%

13Washington, WAWA7,816,116759,024−6%

14Missouri, MOMO6,191,814750,732−14%

15Georgia, GAGA10,940,407738,036−14%

16Indiana, ININ6,851,073697,417−16%

17Tennessee, TNTN7,066,383628,562−11%

18Colorado, COCO5,862,189619,321−2%

19Arizona, AZAZ7,378,838617,231−8%

20Wisconsin, WIWI5,914,872615,730−7%

21Maryland, MDMD6,206,011594,307−14%

22Minnesota, MNMN5,739,445560,185−7%

23Connecticut, CTCT3,624,508537,144−13%

24Kentucky, KYKY4,534,824500,792−15%

25Oregon, OROR4,254,293460,088−6%

26South Carolina, SCSC5,296,225435,703−0%

27Iowa, IAIA3,210,507409,015−12%

28Oklahoma, OKOK4,028,634400,967−16%

29Alabama, ALAL5,086,768392,052−20%

30Kansas, KSKS2,947,197329,541−15%

31Louisiana, LALA4,611,961305,477−15%

32Arkansas, ARAR3,049,391283,345−26%

33New Hampshire, NHNH1,394,868278,913−5%

34Nevada, NVNV3,184,612246,595−9%

35West Virginia, WVWV1,778,373232,834−16%

36Nebraska, NENE1,978,707229,468−13%

37Maine, MEME1,387,817223,464−6%

38Mississippi, MSMS2,946,779201,669−29%

39Utah, UTUT3,392,331185,927+13%

40Rhode Island, RIRI1,101,801182,012−14%

41Idaho, IDID1,934,262159,301−4%

42Montana, MTMT1,116,875144,683−8%

43Delaware, DEDE1,021,191137,609−14%

44New Mexico, NMNM2,120,246127,440−16%

45Vermont, VTVT647,106103,241−8%

46South Dakota, SDSD907,42888,957−0%

47Alaska, AKAK735,70671,425−16%

48Wyoming, WYWY582,39766,585−17%

49Hawaii, HIHI1,445,23562,439−6%

50North Dakota, NDND784,84156,241+5%

51District of Columbia, DCDC681,29449,498+25%

SHOWING 1–51 OF 51

Download CSV (full list, 51 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which state has the highest irish population?

California ranks #1 with 2,331,714 (2020 Decennial Census).

What are the top 5 states by irish population?

California, New York, Pennsylvania, Florida, Texas.

How many states are in this ranking?

51 states qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is irish population measured?

Number of residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2020 Decennial Census.