Knox is a town in Albany County, New York, United States. The population was 2,635 at the 2020 census. The town is in the northwestern part of Albany County and is west of Albany, the state capital. The Town of Knox was established in 1822 from part of the Town of Berne. During the American Revolution, loyalties of the inhabitants were split, but the is…Knox is a town in Albany County, New York, United States. The population was 2,635 at the 2020 census. The town is in the northwestern part of Albany County and is west of Albany, the state capital. The Town of Knox was established in 1822 from part of the Town of Berne. During the American Revolution, loyalties of the inhabitants were split, but the issue was resolved when Tories moved away.