Larchmont is an affluent village located within the Town of Mamaroneck in Westchester County, New York, approximately 18 miles (29 km) northeast of Midtown Manhattan. The population of the village was 5,864 at the 2010 census. In February 2019, Bloomberg ranked Larchmont as the 15th wealthiest place in the United States, and the third wealthiest in New York.
Originally inhabited by the Siwanoy (an Algonquian tribe), Larchmont was explored by the Dutch in 1614. In 1661, John Richbell, a merchant from Hampshire, England, traded a minimal amount of goods and trinkets with the Siwanoy in exchange for land that is today known as the Town of Mamaroneck. The purchase included three peninsulas of land that lay between the Mamaroneck River to the east, and Pelham Manor to the west. The east neck is now known as Orienta while the middle neck is what is now known as Larchmont Manor. The third neck was later sold and is now known as Davenport Neck in New Rochelle. The purchase was contested by Thomas Revell who, one month following Richbell's purchase, bought the land from the Siwanoy at a higher price. Richbell petitioned Governor Stuyvesant, Director General of the Colonies of the New Netherland, and Richbell was issued the land patent in 1662. In 1664 Great Britain took control of the colonies and Richbell received an English title for his lands in 1668 whereupon he began to encourage settlement.