Commonwealth of Pennsylvania /ˌpɛnsɪlˈveɪnjə/ je ipinle U.S. to budo si agbegbe Apailaorun ati Mid-Atlantic orile-ede Amerika. "Pennsylvania – Languages". Advameg, Inc. Retrieved 2010-05-07.  "Annual Estimates of the Resident Population for the United States, Regions, States, and Puerto Rico: April 1, 2000 to July 1, 2009". United States Census Bureau. Retrieved 2009-12-30.  "Elevations and Distances in the United States". United States Geological Survey. 2001. Retrieved October 24, 2011.  Elevation adjusted to North American Vertical Datum of 1988.