Groton [New London County] was incorporated from New London in 1705 and named from the English home town of Governor John Winthrop. Area, 45.2 sq. miles. Population, est., 41,284. Voting districts, 9. Principal industries, construction of submarines, precision castings, shipbuilding, and manufacture of pharmaceuticals, piers and bridge work, bricks and blocks.Groton includes West Mystic, Noank, Groton Long Point, the U.S. Navy Submarine Base and part of Old Mystic and Mystic.