Ledyard is a Town in New London County, Connecticut, United States, located along the Thames River. The town is named after Colonel William Ledyard, a Revolutionary War officer who was killed at the Battle of Groton Heights. The population was 15,413 at the 2020 census. The Foxwoods Resort Casino, owned and operated by the Mashantucket Pequot Tribe, is located in the northeastern section of Ledyard, on the reservation owned by the tribe. Ledyard's zip code is 06339. Within the southwestern area of Ledyard is the district known as Gales Ferry, which has the postal code 06335. In the northeast is Mashantucket, with the postal code 06338. History Named for Colonel William Ledyard, slain commander of Colonial forces in the Battle of Groton Heights in September 1781, the Town was set off from Groton in 1836 by an act of the Connecticut Legislature. The western section, on the east bank of the Thames River, had been settled in the mid-seventeenth century by Thomas Bayley, John Gager, Robert Allyn, and Robert Stoddard. The settlers were farmers and the river, their transportation. Geography According to the United States Census Bureau, the town has a total area of , of which is land and , or 4.62%, is water. Ledyard is situated north of Groton, and borders the east bank of the Thames River in southeastern Connecticut. The northern half of the Naval Submarine Base New London is located in the southwest corner of the town. Ledyard is among the areas of the United States that was covered by a continental ice sheet during the last ice age. Therefore, Ledyard has its share of interesting glacial geology. The glaciers that covered Ledyard carried the many large boulders that are scattered around the town. The town has set aside land designated as a "Glacial Park", which consists of a section of end moraine and outwash deposits (containing kettles). This area encompasses a segment of the "Ledyard Moraine"—a clast-supported boulder deposit that is anomalous in nature. Examples of glacial erratics in Ledyard: The principal communities of Ledyard are Ledyard Center (also known as Ledyard Village) and the Gales Ferry section (including Christy Hill Estates, Devonshire Estates, Ferry View Heights, Glenwoods, Birdland, Sherwood Forest, and Woodridge Estates). Other minor communities and geographic areas are Aljen Heights, Barrett Park, Colonial Manor, Cranwood Homestead, Highlands, Lakeside, Lantern Hill, Long Pond, Parsonage Hill Manor, Presidential Estates, Quaker Town, and Stonehenge.