Owasso, Oklahoma, United States [City]; population was 11,151 in 1990; housing units was 4,219 in 1990; location is 36°17'N 95°50'W; land area is 6.00 square miles (3,839 acres); water area is 0.00 square miles (2 acres); FIPS code is 56650 [SourceCBP]