Oldtown, ID -- U.S. city in Idaho Population (2000): 190 Housing Units (2000): 100 Land area (2000): 0.231888 sq. miles (0.600587 sq. km) Water area (2000): 0.007257 sq. miles (0.018796 sq. km) Total area (2000): 0.239145 sq. miles (0.619383 sq. km) FIPS code: 58600 Located within: Idaho (ID), FIPS 16 Location: 48.185623 N, 117.030158 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Oldtown, ID Oldtown