In the spirit of St. Patrick’s Day:
Twenty-two million Americans — 7.2% of the population — say their “primary ancestry” is Irish, according to the Census’s American Community Survey. Another 13.5 million Americans claim at least some Irish ancestry, bringing the total to 35.5 million Americans — 11.6% of the population — with at least partial Irish ancestry. If that sounds low, remember that Ireland’s population today is just 6.4 million — 4.6 million in the Republic of Ireland and 1.8 million in Northern Ireland. So there are more than five times as many Americans with at least partial Irish ancestry as there are people who live in Ireland.
Read the full HuffPo article by Chief Economist at Trulia using ACS data set.