A valley is a relatively large hollow or depression bounded by hills or mountains on Earth's surface that is developed by stream erosion or glacial activity and that is drained externally. A basin is another hollow or depression on Earth's surface, but it has no outlet to drain the water.
Location in Allegheny County and the state of Pennsylvania. Gibsonia is an unincorporated community and census-designated place in Richland Township, Allegheny County, in the U.S. state of Pennsylvania, north of the city of Pittsburgh. It had a population of 2,733 at the 2010 Census. Its ZIP code is 15044.
Zip Code 15044 Demographics. 15044 is located in the state of Pennsylvania in the Pittsburgh metro area. Zip code 15044 is primarily located in Allegheny County. Portions of 15044 are also located in Butler County. The official postal service name used for 15044 is GIBSONIA, Pennsylvania.ip Code 15044 Demographics. 15044 is located in the state of Pennsylvania in the Pittsburgh metro area. Zip code 15044 is primarily located in Allegheny County. Portions of 15044 are also located in Butler County. The official postal service name used for 15044 is GIBSONIA, Pennsylvania.