St. Clair County, Alabama has 141 churches in the Churches List directory, 2 of them verified and 36 with a published website. The 2020 US Religion Census counted 162 congregations and 47,436 adherents across 26 religious bodies in the county. That is 519 adherents per 1,000 residents of its 91,468 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Southern Baptist Convention | 66 | 23,809 | 260.3 |
| Non-denominational Christian Churches | 28 | 14,310 | 156.4 |
| United Methodist Church | 14 | 2,070 | 22.6 |
| Catholic Church | 1 | 1,617 | 17.7 |
| National Missionary Baptist Convention, Inc. | 5 | 930 | 10.2 |
| Church of God (Cleveland, Tennessee) | 7 | 773 | 8.5 |
| Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. | 4 | 720 | 7.9 |
| Presbyterian Church in America | 3 | 553 | 6.0 |
| Jehovah's Witnesses | 2 | 372 | 4.1 |
| Christian Methodist Episcopal Church | 2 | 360 | 3.9 |
| Churches of Christ | 7 | 347 | 3.8 |
| National Association of Free Will Baptists | 3 | 301 | 3.3 |
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 (91,468). Largest 12 bodies by adherents shown.
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Directory traditions here: Baptist Churches (70) · Non-Denominational (19) · Methodist (16) · United Methodist (5) · Church of Christ (4) · Church of God (4) · Missionary (2) · Presbyterian (2) · Assemblies of God (2) · Episcopal (2)
Directory listings are mapped to St. Clair 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.