The organization began as OSIA Lodge 2446 in the early 1950s. In 2008, The Lodge took a vote to stay with OSIA or form an independent not-for-profit. The vote was 100% to separate and the Sons and Daughters of Italy in America was formed 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.