Delanson is a village in Schenectady County, New York, United States. The population was 377 at the 2010 census. Delanson is in the southeastern portion of the town of Duanesburg.

Schenectady County is a county in the U.S. state of New York. As of the 2020 census, the population was 158,061. The county seat is Schenectady. The name is from a Mohawk language word meaning "on the other side of the pine lands," a term that originally applied to Albany. The county is part of the Capital District region of the state.