America's Most Irish Towns - 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.
Many readers' emails center around researching the genealogy of an immigrant Irish ancestor. Researching their family line has revealed an Irish ancestor. Time to start searching the Irish records to find where they lived in Ireland and when they came to America. Wait, not so fast!