St. Clair County, Michigan has 184 churches in the Churches List directory, 0 of them verified and 55 with a published website. The 2020 US Religion Census counted 129 congregations and 54,797 adherents across 40 religious bodies in the county. That is 342 adherents per 1,000 residents of its 160,379 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 10 | 23,151 | 144.4 |
| Non-denominational Christian Churches | 23 | 7,738 | 48.2 |
| National Missionary Baptist Convention, Inc. | 5 | 4,270 | 26.6 |
| Lutheran Church--Missouri Synod | 9 | 2,758 | 17.2 |
| Evangelical Lutheran Church in America | 8 | 2,590 | 16.1 |
| United Methodist Church | 14 | 2,494 | 15.6 |
| Muslim Estimate | 1 | 2,174 | 13.6 |
| Assemblies of God | 4 | 1,673 | 10.4 |
| Missionary Church | 3 | 1,446 | 9.0 |
| Wesleyan Church | 5 | 1,126 | 7.0 |
| Church of God (Cleveland, Tennessee) | 2 | 676 | 4.2 |
| United Church of Christ | 5 | 636 | 4.0 |
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 (160,379). Largest 12 bodies by adherents shown.
Adult Bible School, Sundays at 10:15 am Worship Service 11:00 am Children Sunday School 11:00 am Wednesday Night Children Program of all ages 6:00 pm to 7:30 pm
Directory traditions here: Non-Denominational (28) · Baptist Churches (26) · Catholic (21) · Lutheran (15) · Methodist (14) · United Methodist (13) · Episcopal (8) · United Church of Christ (6) · Bible (5) · Congregational (4)
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.