Russellville is the county seat and largest city in Pope County, Arkansas, United States, with a 2022 estimated population of 29,133. It is home to Arkansas Tech University. Arkansas Nuclear One, Arkansas' only nuclear power plant is nearby. Russellville borders Lake Dardanelle and the Arkansas River. It is the principal city of the Russellville Micropolitan Statistical Area, which includes all of Pope and Yell counties. Under Arkansas Code Title 14, Russellville is a city of the first class.