Mellette County, South Dakota has 14 churches in the Churches List directory, 0 of them verified and 3 with a published website. The 2020 US Religion Census counted 8 congregations and 713 adherents across 8 religious bodies in the county. That is 372 adherents per 1,000 residents of its 1,919 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 1 | 282 | 147.0 |
| United Methodist Church | 1 | 148 | 77.1 |
| Episcopal Church | 2 | 117 | 61.0 |
| Lutheran Church--Missouri Synod | 1 | 83 | 43.3 |
| Church of the Nazarene | 1 | 55 | 28.7 |
| American Baptist Churches in the USA | 1 | 15 | 7.8 |
| Baha'i Faith USA | 0 | 13 | 6.8 |
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 (1,919). Largest 12 bodies by adherents shown.
Directory traditions here: Catholic (4) · Lutheran (2) · Church of the Nazarene (2) · Episcopal (2) · Church of Jesus Christ Of Latter Day Saints (1) · Methodist (1) · United Methodist (1) · Presbyterian (1)
Directory listings are mapped to Mellette 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.