62552 -- U.S. ZIP code Municipality (1990): CASNER, Illinois All ZIPs for this municipality (1990): 62552 Population (2000): 1063 Housing Units (2000): 418 Land area (2000): 38.229689 sq. miles (99.014435 sq. km) Water area (2000): 0.004120 sq. miles (0.010672 sq. km) Total area (2000): 38.233809 sq. miles (99.025107 sq. km) Located within: Illinois (IL) Location: 39.869841 N, 88.812619 W