Larchmont is a village in Westchester County, New York. The population was 6,485 at the 2000 census. As a village, it is located within the town of Mamaroneck. It is located on the shore of the Long Island Sound, about eighteen miles from Midtown Manhattan. Larchmont is served by the New Haven Line of the Metro-North Railroad. In July 2005, CNN/Money and Money magazine ranked Larchmont 11th on its list of the 100 Best Places to Live in the United States.