Kentucky's 4th congressional district is a congressional district in the U.S. state of Kentucky. Located in the northeastern portion of the state, it is a long district that follows the Ohio River. The majority of voters live in the booming suburban Cincinnati counties of Boone, Kenton, and Campbell, which includes such suburbs as Fort Mitchell, Covington, Florence, Newport, and Fort Thomas. It also stretches into the eastern suburbs of Louisville (including a small portion of Louisville itself) and the western suburbs of Lexington.