Topsham, ME -- U.S. Census Designated Place in Maine Population (2000): 6271 Housing Units (2000): 2486 Land area (2000): 11.023328 sq. miles (28.550288 sq. km) Water area (2000): 0.160855 sq. miles (0.416613 sq. km) Total area (2000): 11.184183 sq. miles (28.966901 sq. km) FIPS code: 76925 Located within: Maine (ME), FIPS 23 Location: 43.932006 N, 69.953815 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Topsham, ME Topsham