Southampton, officially the Town of Southampton, is a town in southeastern Suffolk County, New York, partly on the South Fork of Long Island. As of the 2020 U.S. census, the town had a population of 69,036. Southampton is included in the stretch of shoreline prominently known as the Hamptons.

Long Island is an island in southeastern New York state, constituting a significant share of the New York metropolitan area in both population and land area. The island extends from New York Harbor 118 miles (190 km) eastward into the North Atlantic Ocean with a maximum north–south width of 23 miles (37 km). With a land area of 1,401 square miles (3,630 km2), it is the largest island in the contiguous United States.