Commerce is a city located in southeast Los Angeles County, California, United States. It is bordered by Vernon on the west, Los Angeles on the northwest, East Los Angeles on the north, Montebello on the east, Downey and Bell Gardens on the south, and Maywood on the southwest. The Los Angeles River forms part of its southwestern boundary, and the Rio Hondo separates it from Downey. Commerce is served by the Long Beach and Santa Ana freeways, as well as the Metrolink commuter rail service. It is usually referred to as the "City of Commerce" to distinguish it from the common noun.