Scranton is a city in the northeastern part of Pennsylvania, United States. It is the county seat of Lackawanna County and the largest principal city in the Scranton/Wilkes-Barre metropolitan area. Scranton had a total population of 76,089 in 2010, according to the United States Census Bureau, making it Pennsylvania's sixth-most-populous city after Philadelphia, Pittsburgh, Allentown, Erie, and Reading.Scranton is the geographic and cultural center of the Lackawanna River valley. It is the largest city located in a contiguous quilt-work of former anthracite coal mining communities including the smaller cities of Wilkes-Barre, Pittston, and Carbondale. Scranton was incorporated as a borough on February 14, 1856, and as a city on April 23, 1866.