02639 -- U.S. ZIP code Municipality (1990): DENNIS PORT, Massachusetts All ZIPs for this municipality (1990): 02639 Population (2000): 3273 Housing Units (2000): 4186 Land area (2000): 2.607571 sq. miles (6.753578 sq. km) Water area (2000): 0.222747 sq. miles (0.576913 sq. km) Total area (2000): 2.830318 sq. miles (7.330491 sq. km) Located within: Massachusetts (MA) Location: 41.661115 N, 70.133481 W