62881 -- U.S. ZIP code Municipality (1990): SALEM, Illinois All ZIPs for this municipality (1990): 62881 Population (2000): 11767 Housing Units (2000): 4978 Land area (2000): 98.224143 sq. miles (254.399352 sq. km) Water area (2000): 0.453924 sq. miles (1.175657 sq. km) Total area (2000): 98.678067 sq. miles (255.575009 sq. km) Located within: Illinois (IL) Location: 38.623789 N, 88.953611 W