| | Thurmont, MD | Fountainhead-Orchard Hills, MD | United States |
| Percent Religious | 42.7% | 38.0% | 49.4% |
| Baptist | 2.0% | 1.2% | 8.2% |
| Episcopalian | 1.1% | 1.2% | 0.6% |
| Catholic | 16.3% | 6.5% | 19.7% |
| Church of Jesus Christ | 1.2% | 1.1% | 2.1% |
| Lutheran | 6.1% | 4.8% | 2.4% |
| Pentecostal | 1.7% | 4.2% | 1.9% |
| Methodist | 6.8% | 6.4% | 4.0% |
| Presbyterian | 1.9% | 2.3% | 1.7% |
| Other Christian | 5.0% | 9.9% | 6.7% |
| Judaism | 0.2% | 0.2% | 0.7% |
| Eastern | 0.0% | 0.0% | 0.5% |
| Islam | 0.1% | 0.2% | 0.9% |