LONDON, New, a city and port of entry in the United States of North America, in New London county, Connecticut. It is situated on the western bank of the river Thames, three miles from its mouth, and thirteen miles south of Norwich. The town is irregularly laid out, but has convenient public buildings, and churches for Congregationalists, Episcopalians, Baptists, and Methodists. New London harbour is the best in the state; and packets and steam-boats ply regularly between the port and New York. It is defended by Fort Trumbull on the west side of the river, and by Fort Griswold on the east side. There is likewise a lighthouse, which has been erected on a point projecting pretty far into the sound. A considerable commerce is carried on, both in the coasting trade with the southern states, and in foreign trade with the West Indies. The population amounted in 1821 to 3330, and in 1831 to 4356. Long. 72. 9. W. Lat. 41. 22. N.