The town of Greenburgh is located in the western part of Westchester County. It is marked by the Hudson River, and borders Rockland County, NY using the Tappen Zee Bridge. The Town of Greenburgh has a good transportation system. The New York State Thruway, The Cross Westchester Expressway (287), The Saw Mill River Parkway and the Sprain Brook Parkway all pass through the town The Town of Greenburgh has a total of 36.2 square miles, and is split up by six different villages and three hamlets.