61032 -- U.S. ZIP code Municipality (1990): FREEPORT, Illinois All ZIPs for this municipality (1990): 61032 Population (2000): 32632 Housing Units (2000): 15035 Land area (2000): 148.469829 sq. miles (384.535075 sq. km) Water area (2000): 0.170957 sq. miles (0.442776 sq. km) Total area (2000): 148.640786 sq. miles (384.977851 sq. km) Located within: Illinois (IL) Location: 42.300918 N, 89.632089 W