| | Shamokin, PA | St. Clair township (Westmoreland County), PA | United States |
| Percent Religious | 51.7% | 60.1% | 49.4% |
| Baptist | 0.6% | 0.6% | 8.2% |
| Episcopalian | 0.6% | 0.1% | 0.6% |
| Catholic | 15.5% | 33.8% | 19.7% |
| Church of Jesus Christ | 1.0% | 0.2% | 2.1% |
| Lutheran | 9.3% | 5.8% | 2.4% |
| Pentecostal | 0.6% | 0.8% | 1.9% |
| Methodist | 8.6% | 8.0% | 4.0% |
| Presbyterian | 5.5% | 5.1% | 1.7% |
| Other Christian | 8.1% | 5.5% | 6.7% |
| Judaism | 0.0% | 0.1% | 0.7% |
| Eastern | 0.0% | 0.0% | 0.5% |
| Islam | 1.7% | 0.0% | 0.9% |