The Irish in Philadelphia first celebrated St. Patrick's Day 1771, five years before the Declaration of Independence was signed! The first documented St. Patrick's Day Celebration Parade in Philadelphia was held in 1771, celebrating over 240 continuous years of celebrations. This parade is the 2nd oldest Parade in the Country, topped only by the New York City Parade which started in 1766. The Philadelphia St Patrick’s Day Parade, which is hosted by the St. Patrick's Day Observance Association, was incorporated as a non profit organization in 1952.
 
Each year the St. Patrick's Day Observance Association hosts the parade on the Sunday prior to St. Patrick's Day unless March 17th falls on Sunday. When March 17th falls on a Sunday, the parade is held on March 17th, St. Patrick's Feast Day.
 
Throughout the years this celebration has honored this religious and cultural celebration. Thousands of marchers and spectators in their green bedecked finery, the bands and floats, the flags and music highlight one of the grandest parades in a city that loves parades.