| | Truth or Consequences, NM | Harlingen, TX | United States |
| Percent Religious | 27.4% | 51.3% | 49.4% |
| Baptist | 7.8% | 4.1% | 8.2% |
| Episcopalian | 0.9% | 0.4% | 0.6% |
| Catholic | 8.6% | 35.0% | 19.7% |
| Church of Jesus Christ | 3.6% | 1.6% | 2.1% |
| Lutheran | 0.1% | 0.4% | 2.4% |
| Pentecostal | 2.7% | 1.6% | 1.9% |
| Methodist | 0.7% | 0.9% | 4.0% |
| Presbyterian | 0.0% | 0.4% | 1.7% |
| Other Christian | 2.8% | 6.2% | 6.7% |
| Judaism | 0.0% | 0.0% | 0.7% |
| Eastern | 0.1% | 0.0% | 0.5% |
| Islam | 0.0% | 0.6% | 0.9% |