61815 -- U.S. ZIP code Population (2000): 172 Housing Units (2000): 71 Land area (2000): 0.254568 sq. miles (0.659329 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.254568 sq. miles (0.659329 sq. km) Located within: Illinois (IL) Location: 40.112616 N, 88.370805 W