Gemco was an American, particularly California chain of membership epartment stores that was owned by San Leandro-based Lucky Stores, a California supermarket company which has since been acquired in the 1980s by American Stores Company, which was later acquired by Albertsons in 1999. It operated from 1959 until closing in late 1986. A number of the west coast stores were sold to Target which fueled their entry into California. Gemco had a version called Memco, also owned by Lucky Stores that operated stores in Chicagoland and the Washington, D.C. areas.