How much do you know about St. Patrick's Day? The 2023 WalletHub St. Patrick's Day study provides the following fun facts about St. Patrick's Day: 61% of Americans plan to celebrate St. Patrick's Day. 80% of Americans will wear green on St. Patrick's Day. 1737 was the year of the first St. Patrick's Day parade... and it was held in Boston, not in Ireland. $6.85 Billion (yes, billion with a "b") will be spent on celebrating St. Patrick's Day. 31% of Americans will cook a special meal on St. Patrick's Day. There are 31.5 (38 comments)