Clayton is a village located in the Town of Clayton in Jefferson County, New York, USA. The population was 1,821 at the 2000 census. The name is derived from the name of the town.The Village of Clayton is on the northern edge of the town and is north of Watertown,Clayton is the home of the Antique Boat Museum and Clayton Opera House. The village is a year-round community, but is a summer resort, offering galleries, boutiques and quality services to summer visitors.