West Des Moines, Iowa, United States [City]; population was 31,702 in 1990; housing units was 13,668 in 1990; location is 41°34'N 93°45'W; land area is 17.91 square miles (11,465 acres); water area is 0.69 square miles (442 acres); FIPS code is 83910 [SourceCBP]