62079 -- U.S. ZIP code Municipality (1990): PIASA, Illinois All ZIPs for this municipality (1990): 62079 Population (2000): 180 Housing Units (2000): 69 Land area (2000): 6.455789 sq. miles (16.720416 sq. km) Water area (2000): 0.031400 sq. miles (0.081326 sq. km) Total area (2000): 6.487189 sq. miles (16.801742 sq. km) Located within: Illinois (IL) Location: 39.115848 N, 90.133368 W