Lewiston, ID -- U.S. city in Idaho Population (2000): 30904 Housing Units (2000): 13394 Land area (2000): 16.499755 sq. miles (42.734168 sq. km) Water area (2000): 0.694027 sq. miles (1.797522 sq. km) Total area (2000): 17.193782 sq. miles (44.531690 sq. km) FIPS code: 46540 Located within: Idaho (ID), FIPS 16 Location: 46.400245 N, 117.001030 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Lewiston, ID Lewiston