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

[2][3] Mill Neck Village Hall, which also houses the village's branch of the United States Post Office, is located in the former station house of the Mill Neck Long Island Rail Road station.

[4] This station, which was located on the Oyster Bay Branch, closed in 1998 due to low ridership.

[6] According to the United States Environmental Protection Agency and the United States Geological Survey, the highest point in Mill Neck is Mill Hill.

13.6% of all households were made up of individuals, and 6.4% had someone living alone who was 65 years of age or older.

As of August 2021, the Mayor of Mill Neck is Peter Quick, the Deputy Mayor is John K. Colgate, Jr., and the Village Trustees are John K. Colgate, Jr., Randolph Harrison, Joshua Kugler, Alice G. Smith and Peter Quick.