Marshall County, Indiana has 131 churches in the Churches List directory, 0 of them verified and 36 with a published website. The 2020 US Religion Census counted 91 congregations and 17,678 adherents across 33 religious bodies in the county. That is 384 adherents per 1,000 residents of its 46,085 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 3 | 5,500 | 119.3 |
| Non-denominational Christian Churches | 13 | 2,312 | 50.2 |
| United Methodist Church | 12 | 2,049 | 44.5 |
| Amish Groups, undifferentiated | 17 | 1,636 | 35.5 |
| Assemblies of God | 3 | 945 | 20.5 |
| Lutheran Church--Missouri Synod | 3 | 920 | 20.0 |
| Wesleyan Church | 2 | 730 | 15.8 |
| Church of the Brethren | 5 | 596 | 12.9 |
| United Church of Christ | 4 | 513 | 11.1 |
| National Missionary Baptist Convention, Inc. | 2 | 450 | 9.8 |
| Church of Jesus Christ of Latter-day Saints | 1 | 335 | 7.3 |
| Jehovah's Witnesses | 1 | 258 | 5.6 |
Source: 2020 US Religion Census (Association of Statisticians of American Religious Bodies). Per-1,000 rates divide reported adherents by the county's 2020 Census population (46,085). Largest 12 bodies by adherents shown.
Directory traditions here: Brethren (35) · Non-Denominational (16) · United Methodist (11) · Baptist Churches (9) · Church of Christ (6) · Catholic (6) · Methodist (6) · Church of God (5) · Bible (5) · Assemblies of God (4)
Directory listings are mapped to Marshall County through the US Census Bureau's 2020 ZCTA-to-county relationship file: each ZIP Code Tabulation Area is assigned to the county holding the largest share of its land area, so a small number of churches in ZIP codes that straddle county lines may be attributed to a neighboring county. Congregation and adherent counts come from the 2020 US Religion Census and are reported by the religious bodies themselves. Population is the county's April 2020 decennial-census base from the US Census Bureau's population-estimates program; per-1,000 adherence rates divide reported adherents by that figure. Corrections to any listing go through the corrections page.