Wauwatosa, Wisconsin, United States [City]; population was 49,366 in 1990; housing units was 20,289 in 1990; location is 43°4'N 88°2'W; land area is 13.24 square miles (8,474 acres); water area is 0.00 square miles (2 acres); FIPS code is 84675 [SourceCBP]