Commerce, city (1990 pop. 12,135), Los Angeles co., S Calif., a suburb 5 mi/8 km ESE of downtown Los Angeles; 34°00'N 118°09'W. An important transportation hub for S California, Commerce is the home of several large corporations. Mfg. (food processing, apparel, and plastic, wood, textile, and fabricated wire prods.). Los Angeles R. to SW. Inc. 1960.