| | McAllen, TX | Sierra Vista Southeast, AZ | United States |
| Percent Religious | 51.2% | 41.1% | 49.4% |
| Baptist | 4.3% | 4.6% | 8.2% |
| Episcopalian | 0.2% | 0.3% | 0.6% |
| Catholic | 36.5% | 20.6% | 19.7% |
| Church of Jesus Christ | 1.4% | 6.1% | 2.1% |
| Lutheran | 0.4% | 0.9% | 2.4% |
| Pentecostal | 1.3% | 1.8% | 1.9% |
| Methodist | 1.3% | 1.3% | 4.0% |
| Presbyterian | 0.2% | 0.7% | 1.7% |
| Other Christian | 4.5% | 4.2% | 6.7% |
| Judaism | 0.1% | 0.1% | 0.7% |
| Eastern | 0.0% | 0.1% | 0.5% |
| Islam | 1.0% | 0.0% | 0.9% |