Jefferson County, Missouri has 226 churches in the Churches List directory, 1 of them verified and 88 with a published website. The 2020 US Religion Census counted 170 congregations and 79,716 adherents across 38 religious bodies in the county. That is 352 adherents per 1,000 residents of its 226,569 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 10 | 33,351 | 147.2 |
| Southern Baptist Convention | 40 | 23,993 | 105.9 |
| Lutheran Church--Missouri Synod | 10 | 4,772 | 21.1 |
| Non-denominational Christian Churches | 15 | 4,120 | 18.2 |
| Assemblies of God | 9 | 1,810 | 8.0 |
| United Methodist Church | 15 | 1,784 | 7.9 |
| United Church of Christ | 5 | 1,613 | 7.1 |
| Church of Jesus Christ of Latter-day Saints | 2 | 1,176 | 5.2 |
| Wesleyan Church | 1 | 1,050 | 4.6 |
| Jehovah's Witnesses | 4 | 998 | 4.4 |
| Churches of Christ | 5 | 980 | 4.3 |
| National Missionary Baptist Convention, Inc. | 4 | 710 | 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 (226,569). Largest 12 bodies by adherents shown.
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Directory traditions here: Baptist Churches (56) · Non-Denominational (30) · Catholic (22) · Lutheran (19) · Assemblies of God (10) · United Church of Christ (8) · Christian (8) · Methodist (8) · United Methodist (8) · Pentecostal (7)
Directory listings are mapped to Jefferson 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.