Clearfield is a borough and the county seat of Clearfield County, Pennsylvania, United States. As of the 2020 census the population was 5,962 people, making it the second most populous community in Clearfield County, behind DuBois. The borough is part of the DuBois, PA Micropolitan Statistical Area, as well as the larger State College-DuBois, PA Combined Statistical Area. The settled area surrounding the borough consists of the nearby census-designated places of Hyde and Plymptonville, which combined with Clearfield have a population of approximately 8,237 people.