Groton, CT -- U.S. city in Connecticut Population (2000): 10010 Housing Units (2000): 4569 Land area (2000): 3.189979 sq. miles (8.262008 sq. km) Water area (2000): 3.547972 sq. miles (9.189204 sq. km) Total area (2000): 6.737951 sq. miles (17.451212 sq. km) FIPS code: 34180 Located within: Connecticut (CT), FIPS 09 Location: 41.345231 N, 72.073440 W ZIP Codes (1990): 06340 06349 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Groton, CT Groton