0 Liked! 0 Disliked 0 Grab a pint and buff up on your St. Patrick’s Day knowledge (15 Photos) by: Bob In: Facts, Holidays, Interesting Mar 17, 2016 0 Liked! 0 Disliked 0 1 In the U.S., there are about 33.7 million residents who are of Irish ancestry. That number is nearly nine times the population of Ireland itself. Like this post? 0 Liked! 0 Disliked 0