US Population with Irish Ancestry By State in 2021 (ACS-5yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, the US population with Irish ancestry was 31.54M, which was 9.56% of the total US population.
Among US states, California had the highest number 2.32M, followed by New York 2.19M, and Pennsylvania 1.97M.
Hover over or click on the states in the map below to see for each state, the number and percentage of the US population with Irish ancestry. The information can also be filtered, sorted, and explored further in a table below.
You can see similar information for other ancestry groups in the US.
Related Topics: US Census 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates (2021).
US Population with Irish Ancestry By State in 2021
< 50K
50K - 100K
100K - 500K
500K - 1M
1M - 2M
Over 2M
US Population with Irish Ancestry By State in 2021
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| State | Population with Irish Ancestry | Percentage of State Population (%) |
|---|---|---|
| Alabama | 397272 | 7.95 |
| Alaska | 71433 | 9.71 |
| Arizona | 614921 | 8.69 |
| Arkansas | 279619 | 9.30 |
| California | 2319360 | 5.88 |
| Colorado | 620602 | 10.84 |
| Connecticut | 528983 | 14.67 |
| Delaware | 139618 | 14.22 |
| Florida | 1761730 | 8.26 |
| Georgia | 733593 | 6.90 |
| Hawaii | 63327 | 4.36 |
| Idaho | 165573 | 9.14 |
| Illinois | 1397290 | 10.90 |
| Indiana | 701018 | 10.38 |
| Iowa | 407893 | 12.83 |
| Kansas | 329838 | 11.25 |
| Kentucky | 501580 | 11.16 |
| Louisiana | 305734 | 6.57 |
| Maine | 222255 | 16.38 |
| Maryland | 593042 | 9.65 |
| Massachusetts | 1345219 | 19.24 |
| Michigan | 1007417 | 10.01 |
| Minnesota | 567291 | 10.00 |
| Mississippi | 205695 | 6.93 |
| Missouri | 750022 | 12.21 |
| Montana | 146233 | 13.57 |
| Nebraska | 229936 | 11.78 |
| Nevada | 244967 | 8.01 |
| New Hampshire | 281316 | 20.50 |
| New Jersey | 1185719 | 12.84 |
| New Mexico | 129661 | 6.15 |
| New York | 2187799 | 10.88 |
| North Carolina | 844650 | 8.15 |
| North Dakota | 57526 | 7.44 |
| Ohio | 1485000 | 12.62 |
| Oklahoma | 392544 | 9.94 |
| Oregon | 463718 | 11.02 |
| Pennsylvania | 1972515 | 15.21 |
| Rhode Island | 185945 | 17.03 |
| South Carolina | 437447 | 8.61 |
| South Dakota | 87238 | 9.89 |
| Tennessee | 638141 | 9.30 |
| Texas | 1735873 | 6.01 |
| Utah | 191873 | 5.94 |
| Vermont | 104395 | 16.27 |
| Virginia | 776721 | 9.05 |
| Washington | 767543 | 10.08 |
| West Virginia | 227982 | 12.66 |
| Wisconsin | 614201 | 10.46 |
| Wyoming | 66755 | 11.58 |
| District of Columbia | 50171 | 7.34 |