| | Port Huron charter, MI | Eaton Rapids township, MI | United States |
| Percent Religious | 37.1% | 35.2% | 49.4% |
| Baptist | 0.3% | 0.8% | 8.2% |
| Episcopalian | 0.7% | 0.6% | 0.6% |
| Catholic | 19.6% | 5.9% | 19.7% |
| Church of Jesus Christ | 0.6% | 0.4% | 2.1% |
| Lutheran | 4.7% | 3.3% | 2.4% |
| Pentecostal | 1.0% | 14.2% | 1.9% |
| Methodist | 2.6% | 4.2% | 4.0% |
| Presbyterian | 1.3% | 1.6% | 1.7% |
| Other Christian | 5.2% | 4.3% | 6.7% |
| Judaism | 0.0% | 0.0% | 0.7% |
| Eastern | 0.0% | 0.0% | 0.5% |
| Islam | 0.9% | 0.0% | 0.9% |