Hayward, city (1990 pop. 111,498), Alameda co., W Calif.; settled 1851, inc. 1876. It is an important commercial and distribution center for farm products. Manufactures include wire, plastics, metal and paper products, textiles, machinery, and motor vehicles. Hayward grew with the development of the San Francisco Bay area in the 1970s and 80s. It is the seat of California State Univ. Hayward, and is the eastern terminus of the San Mateo–Hayward Bridge across S San Francisco Bay.