Roosevelt County, Montana has 33 churches in the Churches List directory, 0 of them verified and 10 with a published website. The 2020 US Religion Census counted 40 congregations and 4,427 adherents across 21 religious bodies in the county. That is 410 adherents per 1,000 residents of its 10,798 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 4 | 1,215 | 112.5 |
| Church of Jesus Christ of Latter-day Saints | 3 | 1,008 | 93.4 |
| Evangelical Lutheran Church in America | 6 | 781 | 72.3 |
| Presbyterian Church (U.S.A.) | 6 | 505 | 46.8 |
| Assemblies of God | 2 | 287 | 26.6 |
| Non-denominational Christian Churches | 1 | 100 | 9.3 |
| Southern Baptist Convention | 4 | 93 | 8.6 |
| Association of Free Lutheran Congregations | 2 | 88 | 8.1 |
| Jehovah's Witnesses | 1 | 80 | 7.4 |
| US Conference of Mennonite Brethren Churches | 1 | 66 | 6.1 |
| Lutheran Congregations in Mission for Christ | 1 | 62 | 5.7 |
| Churches of Christ | 1 | 33 | 3.1 |
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 (10,798). Largest 12 bodies by adherents shown.
Directory traditions here: Catholic (8) · Lutheran (7) · Evangelical (4) · Church of Jesus Christ Of Latter Day Saints (3) · Baptist Churches (2) · Presbyterian (2) · Bible (1) · Methodist (1) · Church of the Nazarene (1) · Full Gospel (1)
Directory listings are mapped to Roosevelt 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.