East Greenbush is a census-designated place (CDP) in Rensselaer County, New York, United States.

[2] East Greenbush is mostly within the southern part of the town of East Greenbush, but a small section of the community extends southward into the town of Schodack.

[3] According to the United States Census Bureau, the CDP has a total area of 2.7 square miles (6.9 km2), all land.

There were 1,615 housing units at an average density of 609.8 per square mile (235.4/km2).

20.9% of all households were made up of individuals, and 5.2% had someone living alone who was 65 years of age or older.