Cecilia is a census-designated place (CDP) and unincorporated community in Hardin County, Kentucky, United States. It is located 6 mi west of Elizabethtown, the county seat. As of the 2010 census it had a population of 572.
The town was formerly called "Cecilian Junction" because of its location at the junction of the Illinois Central Railroad's Louisville-Paducah main line and its branch to Hodgenville. (The line now belongs to the Paducah and Louisville Railway, and the branch is now truncated to Elizabethtown. +more) The community is part of the Elizabethtown-Fort Knox Metropolitan Statistical Area, and a significant part of the area served by the Cecilia post office is now within the Elizabethtown city limits.