61361 -- U.S. ZIP code Municipality (1990): SHEFFIELD, Illinois All ZIPs for this municipality (1990): 61361 Population (2000): 1474 Housing Units (2000): 641 Land area (2000): 74.121607 sq. miles (191.974073 sq. km) Water area (2000): 0.065149 sq. miles (0.168735 sq. km) Total area (2000): 74.186756 sq. miles (192.142808 sq. km) Located within: Illinois (IL) Location: 41.400837 N, 89.744446 W