Millerstown is an unincorporated community in Grayson County, Kentucky, in the United States.
Millerstown was incorporated in 1825. A post office was established at Millerstown in 1828, and remained in operation until it was discontinued in 1966.
Coordinates: 37°26′43″N 86°03′03″W / 37.44528°N 86.05083°W