Goldfield, IA -- U.S. city in Iowa Population (2000): 680 Housing Units (2000): 315 Land area (2000): 1.021057 sq. miles (2.644525 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.021057 sq. miles (2.644525 sq. km) FIPS code: 31530 Located within: Iowa (IA), FIPS 19 Location: 42.734708 N, 93.920163 W ZIP Codes (1990): 50542 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Goldfield, IA Goldfield