| | Parker, TX | St. Paul town (Collin County), TX | United States |
| Percent Religious | 55.5% | 55.5% | 49.4% |
| Baptist | 10.8% | 10.8% | 8.2% |
| Episcopalian | 0.2% | 0.2% | 0.6% |
| Catholic | 15.1% | 15.1% | 19.7% |
| Church of Jesus Christ | 1.8% | 1.8% | 2.1% |
| Lutheran | 1.2% | 1.2% | 2.4% |
| Pentecostal | 1.3% | 1.3% | 1.9% |
| Methodist | 6.8% | 6.8% | 4.0% |
| Presbyterian | 0.6% | 0.6% | 1.7% |
| Other Christian | 12.2% | 12.2% | 6.7% |
| Judaism | 0.3% | 0.3% | 0.7% |
| Eastern | 2.0% | 2.0% | 0.5% |
| Islam | 3.1% | 3.1% | 0.9% |