U.S. Census Bureau Facts for Features: Irish-American Heritage Month and St. Patrick’s Day Facts and statistics related to St. Patrick’s Day, including topics such as population distribution of Americans with Irish ancestry, immigration, places in the U.S. called Dublin and Shamrock, trade with Ireland, beer consumption, and “[the] number of U.S. residents who speak Irish Gaelic at home.” From the U.S. Census Bureau. (Citation from LII.org)