| | St. Marys, GA | Bel Air town (Harford County), MD | United States |
| Percent Religious | 39.6% | 39.4% | 49.4% |
| Baptist | 18.7% | 2.8% | 8.2% |
| Episcopalian | 0.9% | 0.7% | 0.6% |
| Catholic | 3.4% | 18.7% | 19.7% |
| Church of Jesus Christ | 1.9% | 0.7% | 2.1% |
| Lutheran | 0.3% | 3.0% | 2.4% |
| Pentecostal | 3.0% | 1.0% | 1.9% |
| Methodist | 6.3% | 6.2% | 4.0% |
| Presbyterian | 0.8% | 1.4% | 1.7% |
| Other Christian | 4.5% | 4.4% | 6.7% |
| Judaism | 0.0% | 0.2% | 0.7% |
| Eastern | 0.0% | 0.0% | 0.5% |
| Islam | 0.0% | 0.0% | 0.9% |