Oroville, WA -- U.S. city in Washington Population (2000): 1653 Housing Units (2000): 794 Land area (2000): 1.236780 sq. miles (3.203246 sq. km) Water area (2000): 0.013480 sq. miles (0.034912 sq. km) Total area (2000): 1.250260 sq. miles (3.238158 sq. km) FIPS code: 51970 Located within: Washington (WA), FIPS 53 Location: 48.938508 N, 119.434903 W ZIP Codes (1990): 98844 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Oroville, WA Oroville