61018 -- U.S. ZIP code Municipality (1990): DAKOTA, Illinois All ZIPs for this municipality (1990): 61018 Population (2000): 1133 Housing Units (2000): 434 Land area (2000): 32.925770 sq. miles (85.277349 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 32.925770 sq. miles (85.277349 sq. km) Located within: Illinois (IL) Location: 42.403305 N, 89.554663 W