61434 -- U.S. ZIP code Municipality (1990): GALVA, Illinois All ZIPs for this municipality (1990): 61434 Population (2000): 3610 Housing Units (2000): 1617 Land area (2000): 75.595656 sq. miles (195.791841 sq. km) Water area (2000): 0.017014 sq. miles (0.044067 sq. km) Total area (2000): 75.612670 sq. miles (195.835908 sq. km) Located within: Illinois (IL) Location: 41.172197 N, 90.039014 W