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is one of the northernmost towns in Orleans County, Vermont, United States. It borders Canada. The population was 426 at the 2000 census. Jay is named for John Jay, one of the Founding Fathers of the United States. The US Census Bureau estimated that the town's population had increased by 13.1% between 2000–2005, the seventh largest increase in the state. Jay is also home to the Jay Challenge, a three-part stage-race, typically held in July.
According to the United States Census Bureau, the town has a total area of 34.0 square miles (88.0 km
The highest point in town is North Jay Peak at above sea level. Despite their containing the name "Jay", other peaks with this name lie mostly in adjacent Westfield, including Jay Peak itself and Jay Peak Resort.