Pennsylvania is the U.S State located in the Northwestern and Mid-Atlantic regions and borders Delaware, Maryland, West Virginia, Ohio, Ontario, New York, New Jersey, and Country Canada to the Northwest. The state is the 6th populous (12,773,801 estimations of 2013) and 33rd most extensive with an area of 119,283 km2 at the density of 110 inhabitants per km2. Philadelphia is the largest city in Pennsylvania has a population of over 1,553,000 and a covered area of 347 km2 at a density of 4,471 inhabitants per km2. Harrisburg is the capital city of Pennsylvania and the 10th most populous city located in Dauphin County.
| Rank | Name | Population | Area (km²) | Density ( inhabitants/km²) | County |
|---|---|---|---|---|---|
| 1 | Philadelphia | 1,553,165 | 347 | 4,471 | Philadelphia |
| 2 | Pittsburgh | 305,841 | 143 | 2,132 | Allegheny |
| 3 | Allentown | 118,577 | 45 | 2,609 | Lehigh |
| 4 | Erie | 100,671 | 49 | 2,031 | Erie |
| 5 | Reading | 87,893 | 25 | 3,433 | Berks |
| 6 | Scranton | 75,806 | 65 | 1,156 | Lackawanna |
| 7 | Bethlehem | 75,018 | 49 | 1,516 | Lehigh and Northampton |
| 8 | Lancaster | 59,325 | 18 | 3,170 | Lancaster |
| 9 | Levittown | 52,700 | 26 | 2,003 | Nassau |
| 10 | Harrisburg | 49,188 | 21 | 2,335 | Dauphin |
| 11 | Altoona | 45,796 | 25 | 1,784 | Blair |
| 12 | York | 43,935 | 13 | 3,204 | York |
| 13 | Penn Hills | 42,295 | 50 | 678 | Allegheny |
| 14 | State College | 41,757 | 11 | 3,535 | Centre |
| 15 | Wilkes-Barre | 41,108 | 18 | 2,273 | Luzerne |
| 16 | Norristown | 34,432 | 9 | 3,775 | Montgomery |
| 17 | Chester | 34,046 | 12 | 2,717 | Delaware |
| 18 | Mount Lebanon | 33,067 | 15 | 2,204 | Allegheny |
| 19 | Bethel Park | 32,391 | 30 | 1,071 | Allegheny |
| 20 | Radnor Township | 31,502 | 35 | 2,284 | Delaware |
| 21 | Williamsport | 29,349 | 22 | 1,298 | Lycoming |
| 22 | Monroeville | 28,400 | 51 | 556 | Lycoming |
| 23 | Drexel Hill | 28,000 | 8 | 3,385 | Delaware |
| 24 | Plum | 27,505 | 74 | 371 | Allegheny |
| 25 | Easton | 27,073 | 10 | 2,465 | Northampton |