Mission, OR -- U.S. Census Designated Place in Oregon Population (2000): 1019 Housing Units (2000): 336 Land area (2000): 7.644868 sq. miles (19.800116 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 7.644868 sq. miles (19.800116 sq. km) FIPS code: 49000 Located within: Oregon (OR), FIPS 41 Location: 45.666940 N, 118.672899 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Mission, OR Mission