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. Schenectady County is part of the Albany-Schenectady-Troy, NY Metropolitan Statistical Area, and is west of the confluence of the Mohawk with the Hudson River.