62037 -- U.S. ZIP code Municipality (1990): GRAFTON, Illinois All ZIPs for this municipality (1990): 62037 Population (2000): 1842 Housing Units (2000): 817 Land area (2000): 55.564954 sq. miles (143.912564 sq. km) Water area (2000): 0.503354 sq. miles (1.303681 sq. km) Total area (2000): 56.068308 sq. miles (145.216245 sq. km) Located within: Illinois (IL) Location: 38.985138 N, 90.445631 W