New Plymouth, ID -- U.S. city in Idaho Population (2000): 1400 Housing Units (2000): 566 Land area (2000): 0.689578 sq. miles (1.785998 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.689578 sq. miles (1.785998 sq. km) FIPS code: 56980 Located within: Idaho (ID), FIPS 16 Location: 43.970689 N, 116.820449 W ZIP Codes (1990): 83655 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: New Plymouth, ID New Plymouth