Doctor density varies by specialty and location. Pennsylvania has 6,626 practicing internal medicine doctors. Broken out by city, internal medicine doctor density in Aldan is 1, in Aliquippa is 17, in Altoona is 34, in Beaver Falls is 13, in Bedford is 4, in Belle Vernon is 6, in Bethlehem is 203, in Bloomsburg is 23, in Bolivar is 1, in Bradford is 10, in Brownsville is 13, in Butler is 35, in Callery is 1, in Camp Hill is 35, in Carbondale is 11, in Cheltenham is 1, in Chester is 50, in Chester Springs is 1, in Clairton is 21, in Clarks Green is 1, in Clarks Summit is 9, in Coatesville is 32, in Connellsville is 9, in Conshohocken is 8, in Corry is 4, in Devon is 1, in Downingtown is 7, in Dubois is 2, in Duquesne is 1, in E McKeesport is 2, in Easton is 70, in Eldred is 2, in Ephrata is 12, in Erie is 83, in Farrell is 6, in Feasterville Trevose is 3, in Fountain Hill is 9, in Frackville is 3, in Franklin is 11, in Greensburg is 34, in Grove City is 10, in Harrisburg is 136, in Hatboro is 3, in Hazleton is 23, in Hermitage is 16, in Horsham is 4, in Huntingdon Valley is 28, in Jeannette is 11, in King Of Prussia is 15, in Lancaster is 76, in Latrobe is 10, in Lebanon is 31, in Levittown is 9, in Linwood is 4, in Lock Haven is 8, in Lower Burrell is 3, in Mc Connellsburg is 4, in Mckeesport is 53, in Meadville is 18, in Minersville is 3, in Monessen is 1, in Monongahela is 15, in Mount Morris is 1, in Mount Union is 1, in Nanticoke is 2, in Nanty Glo is 1, in New Castle is 21, in New Kensington is 13, in New Milford is 1, in Oil City is 9, in Oreland is 1, in Peckville is 8, in Pen Argyl is 4, in Philadelphia is 1,939, in Pittsburgh is 763, in Pittston is 2, in Pottsville is 39, in Prospect Park is 2, in Reading is 76, in Roaring Spring is 3, in Sayre is 52, in Scranton is 102, in Seven Valleys is 1, in Shamokin is 5, in Sharon is 6, in Springfield is 19, in Stevens is 3, in Sugarloaf is 4, in Sunbury is 7, in Taylor is 7, in Telford is 1, in Thorndale is 5, in Titusville is 6, in Torrance is 1, in Warren is 5, in Washington is 20, in Weatherly is 3, in Wilcox is 1, in Williamsport is 31, and in York is 128.

Pennsylvania was the second state admitted to the union in 1787, and has a rich historical background. The population of Pennsylvania is 12,429,616, and its capital is Harrisburg. Historical sites include Valley Forge National Historical Park, the Liberty Bell, Independence Hall, and the Betsy Ross House. Visit the Andy Warhol museum in Pittsburgh, the American Civil War Museum in Gettysburg, or tour the Indian Caverns in Spruce Creek.

According to 2005 Census estimates, Pennsylvania has a population of 12,429,616. Of this population, 2,754,906 are under the age of 18 and 1,887,277 are at or above the age of 65.