02633 -- U.S. ZIP code Municipality (1990): SOUTH CHATHAM, Massachusetts All ZIPs for this municipality (1990): 02633 02659 Population (2000): 4291 Housing Units (2000): 4258 Land area (2000): 10.905254 sq. miles (28.244476 sq. km) Water area (2000): 0.328000 sq. miles (0.849516 sq. km) Total area (2000): 11.233254 sq. miles (29.093992 sq. km) Located within: Massachusetts (MA) Location: 41.686534 N, 69.977468 W