Brookville is a village located within the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States.

When the village was incorporated in 1931, it consisted of a long, narrow tract of land that was centered along Cedar Swamp Road (NY 107).

[3] When the Town of Oyster Bay purchased what is now Brookville from the Matinecocks in the mid-17th century, the area was known as Suco's Wigwam.

They were soon joined by Dutch settlers from western Long Island, who called the surrounding area Wolver Hollow, apparently because wolves gathered at spring-fed Shoo Brook to drink.

The second owner of Broadhollow was Alfred Gwynne Vanderbilt Jr., who at one point was president of the Belmont and Pimlico racetracks.

Marjorie Merriweather Post, daughter of cereal creator Charles William Post, and her husband Edward Francis Hutton, the famous financier, built a lavish 70-room mansion on 178 acres (0.72 km2) called Hillwood.

[5] In 1931, estate owners banded together to win village incorporation to head off what they saw as undesirable residential and commercial development in other parts of Nassau County.

[5] The Chapelle de St. Martin de Sayssuel, also known as the St. Joan of Arc Chapel where Joan of Arc prayed prior to engaging the English, was moved from France to Brookville in the early 20th century.

In 2009, Brookville topped BusinessWeek's list of America's 25 wealthiest towns based on average income and net worth.

[14] Half of the New York Institute of Technology's 1,050-acre (420 ha) Old Westbury campus is located in the Village of Brookville.

[15] The village is also the home of LIU Post, which is the largest campus of the private Long Island University system.