Lake St. Louis, Missouri, United States [City]; population was 7,400 in 1990; housing units was 2,910 in 1990; location is 38°47'N 90°47'W; land area is 5.11 square miles (3,273 acres); water area is 0.84 square miles (540 acres); FIPS code is 40178 [SourceCBP]
