Johnson County, Tennessee has 44 churches in the Churches List directory, 2 of them verified and 9 with a published website. The 2020 US Religion Census counted 56 congregations and 9,338 adherents across 12 religious bodies in the county. That is 520 adherents per 1,000 residents of its 17,949 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Southern Baptist Convention | 18 | 5,065 | 282.2 |
| Non-denominational Christian Churches | 10 | 2,130 | 118.7 |
| Christian Churches and Churches of Christ | 6 | 773 | 43.1 |
| United Methodist Church | 7 | 565 | 31.5 |
| Churches of Christ | 7 | 431 | 24.0 |
| Catholic Church | 1 | 150 | 8.4 |
| National Association of Free Will Baptists | 1 | 90 | 5.0 |
| Assemblies of God | 1 | 43 | 2.4 |
| Seventh-day Adventist Church | 1 | 42 | 2.3 |
| Presbyterian Church (U.S.A.) | 3 | 34 | 1.9 |
| Church of God (Cleveland, Tennessee) | 1 | 14 | 0.8 |
| Baha'i Faith USA | 0 | 1 | 0.1 |
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 (17,949). Largest 12 bodies by adherents shown.
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Directory traditions here: Baptist Churches (19) · Methodist (4) · Non-Denominational (4) · Evangelical (3) · Church of Christ (3) · Catholic (2) · Christian (2) · United Methodist (2) · Mennonite (1) · Church of God (1)
Directory listings are mapped to Johnson 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.