Smethport is a borough in McKean County, Pennsylvania, United States. The mayor is Wayne V. Foltz. The population was 1,655 at the 2010 census. It is the county seat of McKean County. Smethport is part of the Bradford, PA Micropolitan Statistical Area. Smethport, having the coldest temperature ever recorded in Pennsylvania, is the coldest place in Pennsylvania and one of the coldest towns in the contiguous United States.