Fairfield is a home rule-class city in Nelson County, Kentucky, in the United States.

Originally known as Turkey Town,[3] Fairfield was established by the state assembly in 1818 and incorporated as a city in 1870.

Kentucky State Route 509 meets 48 a half-mile west of town.

It lies in the upper drainage of East Fork Cox Creek, a tributary of the Salt River.

[4][5] According to the United States Census Bureau, the city has a total area of 0.29 square miles (0.75 km2).