Mayfield is a town in Fulton County, New York, United States, northeast of Gloversville and Johnstown. The town contains a village also named Mayfield. The population of the town was 6,495 at the 2010 census.

Fulton County is a county in the U.S. state of New York. It forms part of the state's Mohawk Valley region. Its county seat is Johnstown. At the 2020 U.S. census, the county had a population of 53,324. The county is named in honor of Robert Fulton, who is widely credited with developing the first commercially successful steamboat. The county is part of the Mohawk Valley region of the state.