04027 -- U.S. ZIP code Municipality (1990): WEST LEBANON, Maine All ZIPs for this municipality (1990): 04027 Population (2000): 5111 Housing Units (2000): 2094 Land area (2000): 54.878441 sq. miles (142.134504 sq. km) Water area (2000): 0.311165 sq. miles (0.805913 sq. km) Total area (2000): 55.189606 sq. miles (142.940417 sq. km) Located within: Maine (ME) Location: 43.403349 N, 70.917195 W