| | Arlington, VA | Chevy Chase Section Five, MD | United States |
| Percent Religious | 32.8% | 40.6% | 49.4% |
| Baptist | 4.1% | 4.7% | 8.2% |
| Episcopalian | 2.1% | 1.4% | 0.6% |
| Catholic | 15.4% | 14.0% | 19.7% |
| Church of Jesus Christ | 0.9% | 1.3% | 2.1% |
| Lutheran | 0.9% | 1.2% | 2.4% |
| Pentecostal | 0.3% | 0.7% | 1.9% |
| Methodist | 3.4% | 3.0% | 4.0% |
| Presbyterian | 1.2% | 1.6% | 1.7% |
| Other Christian | 1.8% | 6.5% | 6.7% |
| Judaism | 0.2% | 3.2% | 0.7% |
| Eastern | 0.0% | 1.3% | 0.5% |
| Islam | 1.7% | 1.3% | 0.9% |