Ludlow is a home rule-class city in Kenton County, Kentucky, in the United States. The population was 4,407 at the 2010 U.S. census. Located on the Ohio River, Ludlow is a suburb of Covington, Kentucky, and Cincinnati, Ohio. It received its greatest period of early growth as a rail station.
Ludlow is located at 39°5′24″N 84°32′52″W (39.089893, -84.547820). According to the United States Census Bureau, the city has a total area of 1.2 square miles (3.1 km2), of which 0.9 square miles (2.3 km2) is land and 0.4 square miles (1.0 km2) (30.65%) is water.
In 1790, the land that is now Ludlow was given to Gen. Thomas Sandford as a grant in recognition of his service during the Revolutionary War. Sandford traded the land to Thomas D. Carneal for land in what is now Ft. Mitchell.