Crittenden is a home rule-class city[4] in Grant and Kenton counties, Kentucky, in the United States.

A small portion of the northern border of the city touches the Boone County line, and another part of the city extends north into Kenton County.

U.S. Route 25 (Dixie Highway) is a local road running parallel to I-75 that passes through the center of Crittenden; US 25 leads north 7 miles (11 km) to Walton and south 11 miles (18 km) to Williamstown, the Grant County seat.

The community was called "Pin Hook" until 1834, when it was renamed for Kentucky statesman and later governor John J.

19.7% of all households were made up of individuals, and 3.8% had someone living alone who was 65 years of age or older.