There are 38 US Post Offices in Clearfield County serving a total of 94,057 residents equating to 2,475 residents per post office. It's estimated that approximately 150,125 packages are handled across the 38 county post offices annually. Clearfield County is a sixth-class county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 81,642. The county seat is Clearfield, and the largest city is DuBois. The county was created in 1804 and later organized in 1822. Clearfield County comprises the DuBois, PA Micropolitan Statistical Area, which is also included in the State College-DuBois, PA Combined Statistical Area."