Allegheny County GuideAllegheny County is the center of the Pittsburgh Region of Pennsylvania. It contains the city of Pittsburgh and most of the Pittsburgh metropolitan area. HotelsFind hotels in Pittsburgh, Sewickley, West Mifflin and more. PittsburghPittsburgh is a city of about 307,000 in Allegheny County, at the center of the Pittsburgh Region in southwestern Pennsylvania; the population of its metropolitan area is about 2.4 million. SewickleySewickley, located 20 minutes by car outside of the city of Pittsburgh in western Pennsylvania, is a quaint resort town offering many boutique shops, services, and restaurants. Robinson TownshipRobinson Township is a town in Allegheny County, Pennsylvania, about 12 miles west of Pittsburgh. West MifflinWest Miffin is a city in Allegheny County, Pennsylvania, about 7 miles southeast of Pittsburgh. Mt. LebanonMt. Lebanon is an affluent suburb in Allegheny County, Pennsylvania, about seven miles south of Downtown Pittsburgh. Ross TownshipRoss Township is a town in Allegheny County, Pennsylvania, about 5 miles north of Pittsburgh. MonroevilleMonroeville is a city in Allegheny County, Pennsylvania, 12 miles east of Pittsburgh. Green TreeGreen Tree is a borough of Allegheny County, near Pittsburgh. It is located along I-376, between Pittsburgh to the east and Robinson Township and the Pittsburgh International Airport to the west. CoraopolisCoraopolis is a town located on the Ohio River approximately 10 miles west of Pittsburgh, PA. Franklin ParkFranklin Park is a city in Allegheny County, Pennsylvania. It is a suburb of Pittsburgh Franklin Park is located at the junction on I-79 and I-279. ClairtonClairton is a small city in Allegheny County, Pennsylvania. The town is home to the largest coke facility, Clairton Works, in the country.