West Haven, city, New Haven County, southern Connecticut, on the West River, across from New Haven, overlooking Long Island Sound; settled in the mid-17th century, incorporated as a city 1961. It is primarily a residential center and has some industry, including the manufacture of rubber and metal products and textiles. The University of New Haven (1920), the National Art Museum of Sport, and a number of prerevolutionary houses are here. Population 53,184 (1980); 54,021 (1990); 52,360 (2000).