Founded in 1916 as the Coronado Council, and the San Diego Council, in 1917 the two council merged to make the San Diego County Council (#049). Founded in 1922, the Imperial County Council (#029) changed its name to Imperial-Yuma Area Council in 1929, and changed the name again in 1959 to Desert Trails Council. In 1993 Desert Trails and San Diego County merged to become Desert Pacific Council. Desert Pacific Council was renamed to San Diego-Imperial Council on January 3, 2005