Communities / ancestry
The most Irish-ancestry places in America
Counties and cities ranked by Irish ancestry — with how each one voted in 2024 and how it has shifted since 2020. Of the top 100 counties by irish, 56 voted Republican and 44 Democratic in 2024 (median R+3.5); as a group they shifted −3.9 points toward Republicans from 2020 to 2024.
Top 100 counties
| # | Place | Irish | 2024 | Since ’20 |
|---|---|---|---|---|
| 1 | Plymouth County, MA | 27.6% | D D+8.8 | −8.4 |
| 2 | Cape May County, NJ | 27.1% | R R+19.2 | −3.2 |
| 3 | Barnstable County, MA | 25.2% | D D+20.6 | −3.6 |
| 4 | Silver Bow County, MT | 24.8% | D D+7.0 | −7.2 |
| 5 | Rockingham County, NH | 24.7% | R R+2.4 | −4.5 |
| 6 | Gloucester County, NJ | 24.5% | R R+2.8 | −4.8 |
| 7 | Norfolk County, MA | 24.0% | D D+28.5 | −7.5 |
| 8 | Rensselaer County, NY | 23.7% | D D+1.4 | −4.3 |
| 9 | Washington County, RI | 23.6% | D D+15.0 | −4.4 |
| 10 | Newport County, RI | 23.5% | D D+25.5 | −4.3 |
| 11 | Belknap County, NH | 22.7% | R R+13.0 | −2.6 |
| 12 | Saratoga County, NY | 22.6% | D D+1.8 | −3.6 |
| 13 | Delaware County, PA | 22.2% | D D+23.7 | −3.1 |
| 14 | Bucks County, PA | 22.0% | R R+0.1 | −4.5 |
| 15 | Lackawanna County, PA | 21.9% | D D+2.8 | −5.6 |
| 16 | Cayuga County, NY | 21.8% | R R+13.0 | −4.1 |
| 17 | Strafford County, NH | 21.6% | D D+12.0 | −3.2 |
| 18 | Palo Alto County, IA | 21.3% | R R+44.9 | −7.6 |
| 19 | Sussex County, NJ | 21.2% | R R+24.9 | −5.2 |
| 20 | Monroe County, IA | 21.1% | R R+50.6 | −4.1 |
| 21 | Warren County, NY | 21.1% | R R+4.2 | −4.0 |
| 22 | Chester County, PA | 20.8% | D D+14.5 | −2.7 |
| 23 | Kent County, RI | 20.6% | D D+1.9 | −5.8 |
| 24 | Carroll County, NH | 20.5% | R R+1.7 | −3.2 |
| 25 | Stone County, AR | 20.4% | R R+61.7 | −3.8 |
| 26 | Merrimack County, NH | 20.2% | D D+5.2 | −4.6 |
| 27 | Hamilton County, NY | 20.2% | R R+29.4 | +0.8 |
| 28 | Hillsborough County, NH | 19.9% | D D+2.9 | −4.8 |
| 29 | Deer Lodge County, MT | 19.8% | D D+1.0 | −6.7 |
| 30 | Washington County, NY | 19.8% | R R+21.1 | −5.6 |
| 31 | Pike County, PA | 19.8% | R R+24.0 | −5.0 |
| 32 | Hunterdon County, NJ | 19.7% | R R+6.7 | −2.2 |
| 33 | Greene County, NY | 19.5% | R R+16.9 | −1.2 |
| 34 | Susquehanna County, PA | 19.5% | R R+44.7 | −3.5 |
| 35 | Lower Connecticut River Valley Planning Region, CT | 19.4% | D D+12.8 | −3.5 |
| 36 | Dubuque County, IA | 19.4% | R R+8.6 | −5.7 |
| 37 | Cumberland County, ME | 19.2% | D D+35.3 | −0.0 |
| 38 | Dukes County, MA | 19.2% | D D+52.4 | −4.2 |
| 39 | Nantucket County, MA | 19.2% | D D+36.7 | −8.6 |
| 40 | Monmouth County, NJ | 19.2% | R R+11.4 | −8.6 |
| 41 | Butler County, PA | 19.1% | R R+32.2 | +0.3 |
| 42 | Berkshire County, MA | 19.0% | D D+39.7 | −7.1 |
| 43 | Jefferson County, MT | 19.0% | R R+36.5 | −3.2 |
| 44 | Essex County, NY | 19.0% | D D+0.5 | −4.5 |
| 45 | York County, ME | 18.9% | D D+10.5 | −2.0 |
| 46 | Albany County, NY | 18.9% | D D+25.6 | −5.9 |
| 47 | Herkimer County, NY | 18.9% | R R+36.4 | −5.9 |
| 48 | Montgomery County, PA | 18.9% | D D+22.8 | −3.5 |
| 49 | Jo Daviess County, IL | 18.8% | R R+16.8 | −0.4 |
| 50 | Northwest Hills Planning Region, CT | 18.7% | R R+5.4 | −3.2 |
| 51 | Essex County, MA | 18.7% | D D+20.2 | −8.6 |
| 52 | Wayne County, PA | 18.6% | R R+37.1 | −3.5 |
| 53 | Bennington County, VT | 18.6% | D D+22.4 | −5.0 |
| 54 | Windham County, VT | 18.6% | D D+42.3 | −5.0 |
| 55 | Park County, MT | 18.5% | R R+7.7 | −1.3 |
| 56 | Gilchrist County, FL | 18.4% | R R+68.0 | −4.1 |
| 57 | Middlesex County, MA | 18.3% | D D+39.2 | −5.7 |
| 58 | Bristol County, RI | 18.3% | D D+26.4 | −2.9 |
| 59 | Chittenden County, VT | 18.3% | D D+53.1 | −1.4 |
| 60 | Marion County, AR | 18.2% | R R+60.2 | −3.6 |
| 61 | Madison County, MT | 18.1% | R R+45.3 | −5.5 |
| 62 | Delaware County, NY | 18.1% | R R+19.7 | −1.2 |
| 63 | Oswego County, NY | 18.1% | R R+24.1 | −3.9 |
| 64 | Hampshire County, MA | 17.9% | D D+41.7 | −4.8 |
| 65 | Genesee County, NY | 17.9% | R R+33.9 | −2.2 |
| 66 | Ontario County, NY | 17.9% | R R+1.2 | −1.1 |
| 67 | Lawrence County, PA | 17.8% | R R+33.8 | −4.2 |
| 68 | Rutland County, VT | 17.8% | D D+5.2 | −5.2 |
| 69 | Clear Creek County, CO | 17.7% | D D+16.6 | +3.6 |
| 70 | Onondaga County, NY | 17.7% | D D+17.2 | −2.8 |
| 71 | Ulster County, NY | 17.7% | D D+18.5 | −2.4 |
| 72 | Mariposa County, CA | 17.6% | R R+21.1 | −3.0 |
| 73 | Carroll County, MD | 17.6% | R R+24.7 | −1.1 |
| 74 | Burlington County, NJ | 17.6% | D D+16.6 | −3.1 |
| 75 | Putnam County, NY | 17.6% | R R+13.6 | −5.8 |
| 76 | Beaver County, PA | 17.5% | R R+20.7 | −3.0 |
| 77 | Dutchess County, NY | 17.4% | D D+5.4 | −4.3 |
| 78 | Tioga County, NY | 17.4% | R R+22.8 | −2.2 |
| 79 | Washington County, VT | 17.4% | D D+43.0 | −3.1 |
| 80 | Lake County, OH | 17.3% | R R+14.3 | −0.7 |
| 81 | Doddridge County, WV | 17.3% | R R+73.3 | −2.9 |
| 82 | Calaveras County, CA | 17.2% | R R+28.1 | −4.4 |
| 83 | Saline County, IL | 17.2% | R R+49.0 | −1.1 |
| 84 | Ocean County, NJ | 17.2% | R R+36.0 | −7.1 |
| 85 | Broome County, NY | 17.2% | D D+0.4 | −3.0 |
| 86 | Schoharie County, NY | 17.2% | R R+30.4 | −1.3 |
| 87 | Harrison County, WV | 17.2% | R R+40.9 | −3.3 |
| 88 | Valley County, ID | 17.1% | R R+18.6 | −4.8 |
| 89 | Kent County, MD | 17.1% | R R+2.8 | −4.0 |
| 90 | Worcester County, MA | 17.1% | D D+10.0 | −7.8 |
| 91 | Box Butte County, NE | 17.1% | R R+56.4 | +0.4 |
| 92 | Grafton County, NH | 17.1% | D D+19.8 | −4.7 |
| 93 | Livingston County, NY | 17.1% | R R+21.4 | −3.2 |
| 94 | Rappahannock County, VA | 17.1% | R R+17.8 | −3.4 |
| 95 | Marion County, WV | 17.1% | R R+31.2 | −2.6 |
| 96 | Franklin County, FL | 17.0% | R R+43.8 | −6.5 |
| 97 | Newton County, IN | 17.0% | R R+57.0 | −4.9 |
| 98 | Blair County, PA | 17.0% | R R+43.5 | +0.1 |
| 99 | Hancock County, ME | 16.9% | D D+11.8 | −0.5 |
| 100 | Franklin County, MA | 16.9% | D D+37.6 | −6.2 |
Top 50 cities
| # | Place | Irish | 2024 | Since ’20 |
|---|---|---|---|---|
| 1 | Abington, MA | 27.6% | D D+0.8 | −9.3 |
| 2 | Bridgewater Town, MA | 27.6% | R R+0.3 | −8.0 |
| 3 | Brockton, MA | 27.6% | D D+42.6 | −11.1 |
| 4 | Hingham, MA | 27.6% | D D+33.6 | −4.3 |
| 5 | Hull, MA | 27.6% | D D+23.8 | −5.5 |
| 6 | Kingston, MA | 27.6% | D D+1.6 | −10.7 |
| 7 | Marshfield, MA | 27.6% | D D+7.5 | −5.2 |
| 8 | Middleborough Center, MA | 27.6% | R R+7.8 | −10.1 |
| 9 | North Scituate, MA | 27.6% | D D+26.6 | −5.6 |
| 10 | Plymouth, MA | 27.6% | D D+16.3 | −9.5 |
| 11 | Scituate, MA | 27.6% | D D+23.3 | −3.7 |
| 12 | The Pinehills, MA | 27.6% | D D+27.8 | +2.0 |
| 13 | Cape May Court House, NJ | 27.1% | R R+14.4 | +1.3 |
| 14 | Ocean, NJ | 27.1% | R R+14.0 | −3.3 |
| 15 | Villas, NJ | 27.1% | R R+20.2 | −1.3 |
| 16 | Wildwood, NJ | 27.1% | R R+18.9 | −10.9 |
| 17 | Barnstable Town, MA | 25.2% | D D+11.8 | −5.9 |
| 18 | East Falmouth, MA | 25.2% | D D+18.3 | −3.4 |
| 19 | East Harwich, MA | 25.2% | D D+22.4 | −3.1 |
| 20 | South Yarmouth, MA | 25.2% | D D+13.2 | −7.2 |
| 21 | West Yarmouth, MA | 25.2% | D D+12.8 | −5.0 |
| 22 | Yarmouth Port, MA | 25.2% | D D+20.9 | −1.3 |
| 23 | Butte-Silver Bow (balance), MT | 24.8% | D D+7.0 | −7.1 |
| 24 | Derry, NH | 24.7% | R R+11.9 | −5.1 |
| 25 | Exeter, NH | 24.7% | D D+33.0 | −1.0 |
| 26 | Hampton, NH | 24.7% | D D+6.6 | −1.5 |
| 27 | Londonderry, NH | 24.7% | R R+4.8 | −3.8 |
| 28 | Newmarket, NH | 24.7% | D D+31.5 | −2.3 |
| 29 | Portsmouth, NH | 24.7% | D D+41.7 | −4.7 |
| 30 | Beckett, NJ | 24.5% | D D+8.6 | −1.8 |
| 31 | Clayton, NJ | 24.5% | D D+7.5 | −4.2 |
| 32 | Glassboro, NJ | 24.5% | D D+15.7 | −5.9 |
| 33 | Paulsboro, NJ | 24.5% | D D+28.5 | −5.9 |
| 34 | Pitman, NJ | 24.5% | D D+6.7 | −1.4 |
| 35 | Williamstown, NJ | 24.5% | R R+3.1 | −3.6 |
| 36 | Woodbury, NJ | 24.5% | D D+34.7 | −1.8 |
| 37 | Bellingham, MA | 24.0% | D D+2.8 | −6.8 |
| 38 | Braintree Town, MA | 24.0% | D D+6.5 | −11.3 |
| 39 | Brookline, MA | 24.0% | D D+70.7 | −5.6 |
| 40 | Dedham, MA | 24.0% | D D+29.2 | −8.5 |
| 41 | Foxborough, MA | 24.0% | D D+11.8 | −9.8 |
| 42 | Franklin Town, MA | 24.0% | D D+18.4 | −6.8 |
| 43 | Holbrook, MA | 24.0% | D D+12.6 | −8.8 |
| 44 | Medfield, MA | 24.0% | D D+33.6 | −6.6 |
| 45 | Milton, MA | 24.0% | D D+42.3 | −5.4 |
| 46 | Needham, MA | 24.0% | D D+52.5 | −4.6 |
| 47 | Norwood, MA | 24.0% | D D+20.9 | −10.0 |
| 48 | Quincy, MA | 24.0% | D D+24.5 | −10.7 |
| 49 | Randolph Town, MA | 24.0% | D D+50.4 | −7.7 |
| 50 | Sharon, MA | 24.0% | D D+44.9 | −8.7 |
Rankings suppress places below 5,000 population, where small-sample ACS shares get noisy. Demographic shares are American Community Survey 5-year estimates (ancestry table B04006, language C16001) and the 2020 U.S. Religion Census; every figure traces to a named federal or academic source. The vote columns are presidential — a place can be demographically homogeneous and politically split, which is exactly what these tables are built to show.