Southfield, city (1990 pop. 75,728), Oakland co., SE Mich., a suburb of Detroit, on the Rouge River; laid out 1817, inc. as a city 1958. There are electronics research, meat-processing, and printing facilities, and manufactures include plastic, metal, rubber, and wood products; chemicals; transportation equipment; and machinery. Southfield is also a retail and office center for the Detroit metropolitan area. Lawrence Technological Univ. and an extension center of Wayne State Univ. are in Southfield.