60544 -- U.S. ZIP code Municipality (1990): PLAINFIELD, Illinois All ZIPs for this municipality (1990): 60544 Population (2000): 44284 Housing Units (2000): 15712 Land area (2000): 60.499673 sq. miles (156.693426 sq. km) Water area (2000): 1.613272 sq. miles (4.178355 sq. km) Total area (2000): 62.112945 sq. miles (160.871781 sq. km) Located within: Illinois (IL) Location: 41.607624 N, 88.197363 W