Nantucket is an island about 30 miles (50 km) by ferry south from Cape Cod, in the U.S. state of Massachusetts. Together with the small islands of Tuckernuck and Muskeget, it constitutes the Town and County of Nantucket, a combined county/town government. It is the only such consolidated town-county in Massachusetts. As of the 2010 census, the population was 10,172. Part of the town is designated the Nantucket CDP, or census-designated place. The region of Surfside on Nantucket is the southernmost settlement in Massachusetts.
The name "Nantucket" is adapted from similar Algonquian names for the island, perhaps meaning "faraway land or island" or "sandy, sterile soil tempting no one", but is very similar to the endonym of the native Nehantucket tribe that occupied the region at the time of European settlement.
Nantucket is a tourist destination and summer colony. Due to tourists and seasonal residents, the population of the island increases to at least 50,000 during the summer months. The average sale price for a single-family home was $2.3 million in the first quarter of 2018.
The National Park Service cites Nantucket, designated a National Historic Landmark District in 1966, as being the "finest surviving architectural and environmental example of a late 18th- and early 19th-century New England seaport town."
Nantucket probably takes its name from a Wampanoag word, transliterated variously as natocke, nantaticu, nantican, nautica or natockete, which is part of Wampanoag lore about the creation of Martha's Vineyard and Nantucket. The meaning of the term is uncertain, although it may have meant "far away island" or "sandy, sterile soil tempting no one".