Pennsylvania Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Philadelphia | Philadelphia | 1,590,580 |
| 2. | City of Pittsburgh | Allegheny | 308,545 |
| 3. | City of Allentown | Lehigh | 128,329 |
| 4. | City of Reading | Berks | 96,498 |
| 5. | City of Erie | Erie | 92,753 |
| 6. | City of Bethlehem | Northampton | 78,679 |
| 7. | City of Scranton | Lackawanna | 76,597 |
| 8. | City of Lancaster | Lancaster | 58,851 |
| 9. | Levittown Census Designated Place | Bucks | 52,154 |
| 10. | City of Harrisburg | Dauphin | 50,395 |
| 11. | City of Wilkes-Barre | Luzerne | 44,884 |
| 12. | City of York | York | 44,836 |
| 13. | City of Altoona | Blair | 43,067 |
| 14. | Borough of State College | Centre | 40,065 |
| 15. | Borough of Norristown | Montgomery | 35,763 |
| 16. | Municipality of Bethel Park | Allegheny | 32,921 |
| 17. | City of Chester | Delaware | 32,676 |
| 18. | City of Hazleton | Luzerne | 30,759 |
| 19. | City of Easton | Northampton | 29,232 |
| 20. | Drexel Hill Census Designated Place | Delaware | 28,564 |
