Flat, AK -- U.S. Census Designated Place in Alaska Population (2000): 4 Housing Units (2000): 3 Land area (2000): 161.068896 sq. miles (417.166508 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 161.068896 sq. miles (417.166508 sq. km) FIPS code: 25880 Located within: Alaska (AK), FIPS 02 Location: 62.454135 N, 158.008284 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Flat, AK Flat