Fairfield is a town in Franklin County, Vermont, United States, chartered in 1763. The population was 2,044 at the 2020 census. President Chester A. Arthur was born in Fairfield in 1829, and lived there for the first three years of his life. A replica of his home, the Chester Alan Arthur State Historic Site, is open seasonally.

Franklin County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 49,946. Its county seat is the city of St. Albans. It borders the Canadian province of Quebec. The county was created in 1792 and organized in 1796. Franklin County is part of the Burlington metropolitan area.