| | Chevy Chase Section Three, MD | Mystic, CT | United States |
| Percent Religious | 40.6% | 45.2% | 49.4% |
| Baptist | 4.7% | 2.6% | 8.2% |
| Episcopalian | 1.4% | 1.3% | 0.6% |
| Catholic | 14.0% | 32.0% | 19.7% |
| Church of Jesus Christ | 1.3% | 0.7% | 2.1% |
| Lutheran | 1.2% | 0.7% | 2.4% |
| Pentecostal | 0.7% | 0.6% | 1.9% |
| Methodist | 3.0% | 1.1% | 4.0% |
| Presbyterian | 1.6% | 2.7% | 1.7% |
| Other Christian | 6.5% | 2.3% | 6.7% |
| Judaism | 3.2% | 0.8% | 0.7% |
| Eastern | 1.3% | 0.0% | 0.5% |
| Islam | 1.3% | 0.1% | 0.9% |