Martha's Vineyard , United States

Martha's Vineyard is an island (including the smaller Chappaquiddick Island) off the south of Cape Cod in New England, known for being an affluent summer colony. The islands both form a part of the Outer Lands region. The estimated year-round population is 15,000 residents, however the summer population can swell to over 75,000 people. About 56% of the Vineyard’s 14,621 homes are seasonally occupied. The island is primarily known as a summer colony, and is accessible only by boat and by air. Nevertheless, its year-round population has grown considerably since the 1960s.