02368 -- U.S. ZIP code Municipality (1990): RANDOLPH, Massachusetts All ZIPs for this municipality (1990): 02368 Population (2000): 31170 Housing Units (2000): 11547 Land area (2000): 10.340982 sq. miles (26.783020 sq. km) Water area (2000): 0.433742 sq. miles (1.123387 sq. km) Total area (2000): 10.774724 sq. miles (27.906407 sq. km) Located within: Massachusetts (MA) Location: 42.173417 N, 71.049124 W