Hartley, IA -- U.S. city in Iowa Population (2000): 1733 Housing Units (2000): 803 Land area (2000): 1.275932 sq. miles (3.304648 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.275932 sq. miles (3.304648 sq. km) FIPS code: 34725 Located within: Iowa (IA), FIPS 19 Location: 43.181847 N, 95.476328 W ZIP Codes (1990): 51346 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hartley, IA Hartley