Heron Lake, MN -- U.S. city in Minnesota Population (2000): 768 Housing Units (2000): 322 Land area (2000): 1.061582 sq. miles (2.749485 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.061582 sq. miles (2.749485 sq. km) FIPS code: 28700 Located within: Minnesota (MN), FIPS 27 Location: 43.793162 N, 95.319920 W ZIP Codes (1990): 56137 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Heron Lake, MN Heron Lake