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Irish ancestry by County

Share of residents reporting Irish ancestry. Ancestry is self-reported heritage, which is different from race, from Hispanic origin, and from where someone was born.

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Highest counties

CountyIrish ancestry
Grant County, Nebraska27.8%
Plymouth County, Massachusetts27.6%
Cape May County, New Jersey27.1%
Terrell County, Texas25.3%
Barnstable County, Massachusetts25.2%
Silver Bow County, Montana24.8%
Rockingham County, New Hampshire24.7%
Gloucester County, New Jersey24.5%
Norfolk County, Massachusetts24.0%
Rensselaer County, New York23.7%
Washington County, Rhode Island23.6%
Newport County, Rhode Island23.5%

Lowest counties

CountyIrish ancestry
Yauco Municipio, Puerto Rico0.0%
Yabucoa Municipio, Puerto Rico0.0%
Villalba Municipio, Puerto Rico0.0%
Vieques Municipio, Puerto Rico0.0%
Vega Baja Municipio, Puerto Rico0.0%
Vega Alta Municipio, Puerto Rico0.0%
Utuado Municipio, Puerto Rico0.0%
Toa Alta Municipio, Puerto Rico0.0%
Santa Isabel Municipio, Puerto Rico0.0%
San Sebastián Municipio, Puerto Rico0.0%
San Lorenzo Municipio, Puerto Rico0.0%
San Germán Municipio, Puerto Rico0.0%

Counted among: Total population