Irish Ancestry Surprises Revealed by New DNA Map. The genetic atlas revealed new information about health risks, ancient political borders, and the influence of Vikings.

More than 1.4 million people have Irish ancestry in Massachusetts, ... You can find out how Irish your state is by using our interactive map below. If it doesn't appear properly for you, click here.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

The Irish in America. The U.S. Census Bureau collects data on reported heritage of the population. Here is what we know about Americans with reported Irish ancestry: States with Irish American ...

St. Patrick’s Day is nearly here, meaning those with Irish ancestry (and those without) will soon be sipping green beer, eating corned beef, and checking their leprechaun traps.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

Pennsylvania was close behind, with roughly 14.6% of its population sporting Irish ancestry. The interactive map below shows each state’s population percentage of Irish or partially Irish residents.

As a whole, about 30.7 million U.S. residents — or slightly more than 9% — claim to be at least partially Irish, Census data shows.