Guilderland Center is a hamlet in the town of Guilderland, Albany County, New York, United States. The hamlet lies along New York Route 146 and the Black Creek, a tributary of the Normans Kill.

Guilderland is a town in Albany County, New York, United States. In the 2020 census, the town had a population of 36,848. The town is named for the Gelderland province in the Netherlands. The town of Guilderland is on the central-northwest border of the county. It is just west of Albany, the capital of the U.S. state of New York.