Living 34.7 Million By Indy Staff Thu Mar 13, 2008 | 6:00am Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to print (Opens in new window) 34.7 Million Number of U.S. residents who claim Irish ancestry; this number is almost nine times the population of Ireland itself (4.2 million). Add to Favorites