61535 -- U.S. ZIP code Population (2000): 1398 Housing Units (2000): 545 Land area (2000): 8.063124 sq. miles (20.883394 sq. km) Water area (2000): 0.077147 sq. miles (0.199811 sq. km) Total area (2000): 8.140271 sq. miles (21.083205 sq. km) Located within: Illinois (IL) Location: 40.590353 N, 89.540531 W