St. Helens, Oregon, United States [City]; population was 7,535 in 1990; housing units was 3,081 in 1990; location is 45°52'N 122°49'W; land area is 3.58 square miles (2,290 acres); water area is 0.87 square miles (554 acres); FIPS code is 64600 [SourceCBP]