PA Catholic Statistics
Source: the 2024 Catholic Directory
| DIOCESE | POPULATION | % |
| Allentown | 215,601 | 6.50% |
| Altoona-Johnstown | 69,792 | 2.10% |
| Erie | 195,243 | 5.90% |
| Greensburg | 116,927 | 3.50% |
| Harrisburg | 206,072 | 6.30% |
| Philadelphia | 1,551,494 | 47.10% |
| Pittsburgh | 621,710 | 19.00% |
| Scranton | 317,426 | 9.60% |
| SUBTOTAL | 3,294,265 |
