| RELIGION | Marysville township (Marshall county) | Pella | United States |
| Percent Religious | 63.70% | 60.24% | 48.78% |
| Catholic | 20.48% | 7.23% | 19.43% |
| LDS | 1.08% | 1.11% | 2.03% |
| Baptist | 3.88% | 6.03% | 9.30% |
| Episcopalian | 0.85% | 0.00% | 0.63% |
| Pentacostal | 2.06% | 0.80% | 1.87% |
| Lutheran | 13.92% | 4.16% | 2.33% |
| Methodist | 13.08% | 8.76% | 3.93% |
| Presbyterian | 5.51% | 30.40% | 1.63% |
| Other Christian | 2.86% | 1.75% | 5.51% |
| Jewish | 0.00% | 0.00% | 0.73% |
| Eastern | 0.00% | 0.00% | 0.53% |
| Islam | 0.00% | 0.00% | 0.84% |