62685 -- U.S. ZIP code Municipality (1990): ROYAL LAKES, Illinois All ZIPs for this municipality (1990): 62685 Population (2000): 2213 Housing Units (2000): 974 Land area (2000): 83.212709 sq. miles (215.519918 sq. km) Water area (2000): 0.280807 sq. miles (0.727287 sq. km) Total area (2000): 83.493516 sq. miles (216.247205 sq. km) Located within: Illinois (IL) Location: 39.146650 N, 90.000598 W