Oregon -- U.S. County in Missouri Population (2000): 10344 Housing Units (2000): 4997 Land area (2000): 791.403041 sq. miles (2049.724380 sq. km) Water area (2000): 0.182945 sq. miles (0.473825 sq. km) Total area (2000): 791.585986 sq. miles (2050.198205 sq. km) Located within: Missouri (MO), FIPS 29 Location: 36.636805 N, 91.427323 W Headwords: Oregon Oregon, MO Oregon County Oregon County, MO