The organization began as OSIA Lodge 2446 in the early 1950s. In 2008, a group of members took a vote to form an independent not-for-profit organization. The vote was 100% to form the Sons and Daughters of Italy in America in September 2008.  After formalizing all the legal documents with the State of Illinois and the Federal Government, SADIA was incorporated on December 9, 2008 in the State of Illinois.