Tumwater, Washington, United States [City]; population was 9,976 in 1990; housing units was 4,463 in 1990; location is 46°60'N 122°55'W; land area is 9.65 square miles (6,174 acres); water area is 0.09 square miles (56 acres); FIPS code is 72905 [SourceCBP]