62983 -- U.S. ZIP code Municipality (1990): ROYALTON, Illinois All ZIPs for this municipality (1990): 62983 Population (2000): 1453 Housing Units (2000): 712 Land area (2000): 19.896466 sq. miles (51.531608 sq. km) Water area (2000): 0.287149 sq. miles (0.743712 sq. km) Total area (2000): 20.183615 sq. miles (52.275320 sq. km) Located within: Illinois (IL) Location: 37.884066 N, 89.111288 W