[3] Rye Brook is located in southeastern Westchester County and shares its eastern border with Greenwich, Connecticut.

[4][5] In 1982, 150 residents of the unincorporated area proposed to establish the village of Rye Brook and organized a petition containing 1,536 signatures.

The petition drive, which contained the signatures of approximately 36% of the registered voters in the unincorporated area, was organized by the Independent Civic Association.

"[6] The residents of the unincorporated area voted on June 23, 1982, to create the Village of Rye Brook.

[7] The village is home to the William E. Ward House, which was added to the National Register of Historic Places in 1976.

[8] Also known as Ward's Castle, it was the home of the National Cartoon Museum, established by Mort Walker, the creator of Beetle Bailey, from 1976 to 1992.

[9] In 1983, 800 Westchester Avenue, described as the "Taj Mahal of Rye Brook"[10] and the "contemporary equivalent to the classical villa," was constructed as the General Foods Corporate Headquarters.

[12] According to the United States Census Bureau, the village has a total area of 3.5 square miles (9.1 km2), all land.

[citation needed] The village of Rye Brook is governed by a mayor and a five-member Board of Trustees, all volunteers.

Port Chester's fire chief also oversees the Rye Brook police department.