Mahtomedi, Minnesota, United States [City]; population was 5,569 in 1990; housing units was 1,929 in 1990; location is 45°3'N 92°58'W; land area is 3.60 square miles (2,303 acres); water area is 1.43 square miles (913 acres); FIPS code is 39428 [SourceCBP]