Gilliam County, Oregon has 11 churches in the Churches List directory, 0 of them verified and 6 with a published website. The 2020 US Religion Census counted 6 congregations and 336 adherents across 6 religious bodies in the county. That is 168 adherents per 1,000 residents of its 1,996 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| United Methodist Church | 1 | 97 | 48.6 |
| Catholic Church | 2 | 94 | 47.1 |
| United Church of Christ | 1 | 71 | 35.6 |
| Church of the Nazarene | 1 | 56 | 28.1 |
| Seventh-day Adventist Church | 1 | 14 | 7.0 |
| Baha'i Faith USA | 0 | 4 | 2.0 |
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 (1,996). Largest 12 bodies by adherents shown.
Directory traditions here: Catholic (4) · Church of the Nazarene (2) · United Church of Christ (1) · Methodist (1) · Baptist Churches (1) · United Methodist (1) · Seventh Day Adventist (1)
Directory listings are mapped to Gilliam 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.