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Share reporting Irish ancestry: U.S. states ranked (2025)

Measure: Share reporting Irish ancestry (%). All 50 states and District of Columbia with data in Selected ancestries by state, ranked from highest to lowest. Reference period: 2025.

Licence
Public domain (U.S. federal government work).
Data last updated
2026-11-04
Download full table CSVSource: U.S. Census Bureau (opens in a new tab)

National value: 9 (United States).

Washington: 8.9Idaho: 9.4Montana: 12.9North Dakota: 6.4Minnesota: 9Michigan: 9.7Ohio: 11.8Pennsylvania: 14.5New York: 9.8Vermont: 16.5New Hampshire: 19.9Maine: 16.3Arizona: 8.3California: 5.4New Mexico: 6.3Texas: 5.4Louisiana: 6.2Mississippi: 6.6Alabama: 8.2Florida: 7.8Georgia: 6.8South Carolina: 9.8North Carolina: 8.3Virginia: 9District of Columbia: 8Maryland: 8.9Delaware: 13.9New Jersey: 10.9Connecticut: 13.2Rhode Island: 15.4Massachusetts: 17.2Oregon: 10.3Utah: 6.3Wyoming: 11.8Nevada: 7.4Colorado: 10.7South Dakota: 9Nebraska: 11Kansas: 9.9Oklahoma: 9.3Iowa: 11.6Missouri: 11.3Wisconsin: 9.9Illinois: 10.1Kentucky: 10.8Arkansas: 8.4Tennessee: 9.5West Virginia: 11.2Indiana: 10Alaska: 8.1Hawaii: 4.6

Small states, hard to see on the map:

  • Lowest: 4.6 to 7.8 %
  • Group 2: 7.8 to 9 %
  • Group 3: 9 to 10 %
  • Group 4: 10 to 11.8 %
  • Highest: 11.8 to 19.9 %
The map is a visual summary; every value is in the table below, which is the keyboard and screen-reader path. Groups are quintiles of the values shown (a derived grouping). Boundaries: Natural Earth (public domain), simplified. Alaska and Hawaii are shown as insets, not to scale.

Rank is derived by Quadranac: 1 = highest value; ties share a rank. Values are as published in the source table.

Note: People can report up to two ancestries, so shares overlap and do not add to 100%. Hispanic origin and race are asked separately and are not included.

1New Hampshire19.9
2Massachusetts17.2
3Vermont16.5
4Maine16.3
5Rhode Island15.4
6Pennsylvania14.5
7Delaware13.9
8Connecticut13.2
9Montana12.9
10Ohio11.8
10Wyoming11.8
12Iowa11.6
13Missouri11.3
14West Virginia11.2
15Nebraska11
16New Jersey10.9
17Kentucky10.8
18Colorado10.7
19Oregon10.3
20Illinois10.1
21Indiana10
22Kansas9.9
22Wisconsin9.9
24New York9.8
24South Carolina9.8
26Michigan9.7
27Tennessee9.5
28Idaho9.4
29Oklahoma9.3
30Minnesota9
30South Dakota9
30Virginia9
33Maryland8.9
33Washington8.9
35Arkansas8.4
36Arizona8.3
36North Carolina8.3
38Alabama8.2
39Alaska8.1
40District of Columbia8
41Florida7.8
42Nevada7.4
43Georgia6.8
44Mississippi6.6
45North Dakota6.4
46New Mexico6.3
46Utah6.3
48Louisiana6.2
49California5.4
49Texas5.4
51Hawaii4.6

Source: U.S. Census Bureau, American Community Survey 1-year estimates, Table DP02: Selected Social Characteristics. Reference period: 2025.

Cite this ranking

U.S. states ranked by share reporting Irish ancestry (%) (2025). Data: U.S. Census Bureau, American Community Survey, ACS 1-year estimates, Table DP02; rank derived by Quadranac. Data last updated 2026-11-04. https://quadranac.com/rankings/us-states-by-irish/

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