Rineyville is an unincorporated community and census-designated place in Hardin County, Kentucky, United States. It is located 7 miles northwest of Elizabethtown. The population was 3,039 as of the 2020 Census. The Paducah and Louisville Railway runs north and south through the community. There is no formal city government; a Magistrate, elected to the Hardin County Fiscal Court, represents the unincorporated community.