East Greenbush is a town in Rensselaer County, New York, United States. It is a suburb of Albany. The population was 16,748 at the 2020 census. The word Greenbush is derived from the Dutch het groen bosch, referring to the pine woods that originally covered the land. The first settlement of the land now known as East Greenbush was made by tenants under patroon Kiliaen van Rensselaer circa 1630. The town was established in 1855 as Clinton, and was renamed in 1858. It is mostly suburban along its major highways and rural in the southwestern and northeastern corners.