Pennsylvania Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Philadelphia | Philadelphia | 1,602,840 |
| 2. | City of Pittsburgh | Allegheny | 305,757 |
| 3. | City of Allentown | Lehigh | 127,738 |
| 4. | City of Reading | Berks | 96,283 |
| 5. | City of Erie | Erie | 93,236 |
| 6. | City of Scranton | Lackawanna | 76,339 |
| 7. | City of Bethlehem | Northampton | 76,269 |
| 8. | City of Lancaster | Lancaster | 58,425 |
| 9. | Levittown Census Designated Place | Bucks | 52,565 |
| 10. | City of Harrisburg | Dauphin | 50,673 |
| 11. | City of Wilkes-Barre | Luzerne | 44,965 |
| 12. | City of York | York | 44,785 |
| 13. | City of Altoona | Blair | 43,371 |
| 14. | Borough of State College | Centre | 40,067 |
| 15. | Borough of Norristown | Montgomery | 35,789 |
| 16. | Municipality of Bethel Park | Allegheny | 33,584 |
| 17. | City of Chester | Delaware | 32,420 |
| 18. | City of Hazleton | Luzerne | 30,365 |
| 19. | Drexel Hill Census Designated Place | Delaware | 28,775 |
| 20. | City of Easton | Northampton | 28,300 |
