Tutor Doctor Longmont to Loveland Library (Blog): What do you know about St. Patrick's Day? let's find out.... Remember: Don't depend on the luck of the Irish for good grades...contact us today! St. Patrick's Day Facts & Trivia In Ireland, St. Patrick's Day is a religious holiday similar to Christmas and Easter. Erin go Bragh translates to "Ireland forever." The very first St. Patrick's Day parade was not in Ireland. It was in Boston in 1737. The largest parade in the United States, held since 1762, is in New York City, and draws more than one million spectators each year. Over 100 US cities hold a parade every year. Some of the other biggest St. Patrick's Day parades are in Chicago, Illinois and Savannah, Georgia. In 1948 President Truman became the first president to attend a St. Patrick’s Day parade. The city of Chicago goes so far to celebrate that they dye their river green. Green is associated with Saint Patrick's Day because it is the color of spring, of Ireland, and of the shamrock. To celebrate St. Patrick's Day, 110 million people will celebrate the day by wearing green, making an Irish-inspired meal, or going out to celebrate. There are 33.7 million U.S. residents who are of Irish ancestry. That number is almost nine times the population of Ireland itself. 15 million cards are exchanged on St. Patrick's Day. 10 percent of all St Patrick's Day cards are sold in New York.