Commerce, city (1990 pop. 12,135), Los Angeles co., S Calif., a suburb of Los Angeles; inc. 1960. An important transportation hub for S California, Commerce is the home of several large corporations. There is food processing and diverse manufacturing. In 1927, Charles A. Lindbergh landed The Spirit of St. Louis at the old Vail Field in Commerce while on a nationwide tour following his transatlantic flight.