Chazy (shay-ZEE) is a town in northeastern Clinton County, New York, in the United States. The population was 4,284 at the 2010 census. The closest city is Plattsburgh, 14 miles (23 km) to the south. Chazy is 8 miles (13 km) south of the Canadian border. The ZIP code is 12921 and it is in area code 518.