Bradford is a city in McKean County, Pennsylvania, United States. It is located close to the border with New York state and approximately 78 miles (126 km) south of Buffalo, New York. Home to an oil refinery, Zippo headquarters and a University of Pittsburgh branch campus, Bradford is the principal city in the Bradford, PA Micropolitan Statistical Area. The population was 7,849 at the 2020 census, down from 8,770 in 2010.