Decatur County, Tennessee has 42 churches in the Churches List directory, 0 of them verified and 2 with a published website. The 2020 US Religion Census counted 50 congregations and 6,389 adherents across 12 religious bodies in the county. That is 559 adherents per 1,000 residents of its 11,436 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Southern Baptist Convention | 16 | 3,805 | 332.7 |
| United Methodist Church | 11 | 781 | 68.3 |
| Non-denominational Christian Churches | 5 | 700 | 61.2 |
| Churches of Christ | 5 | 409 | 35.8 |
| Church of God in Christ | 2 | 196 | 17.1 |
| Assemblies of God | 1 | 148 | 12.9 |
| African Methodist Episcopal Church | 2 | 106 | 9.3 |
| Seventh-day Adventist Church | 1 | 102 | 8.9 |
| Cumberland Presbyterian | 2 | 92 | 8.0 |
| Catholic Church | 1 | 50 | 4.4 |
| Church of God (Cleveland, Tennessee) | 1 | 0 | 0.0 |
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 (11,436). Largest 12 bodies by adherents shown.
Directory traditions here: Baptist Churches (13) · Pentecostal (7) · Church of Christ (5) · Non-Denominational (3) · United Methodist (3) · Methodist (3) · Seventh Day Adventist (2) · Apostolic (2) · Church of God (1) · Church of God in Christ (1)
Church registers are among the richest genealogical sources: baptisms, marriages, and burials often predate civil records. The FamilySearch catalog holds microfilmed church records for many Tennessee counties, filed by denomination and parish name: search Decatur County church records on FamilySearch (free account). Cross-reference with the historic-register churches above and the cemeteries listed on each church's page.
FEMA has issued 28 disaster declarations covering Decatur County since records began in 1953, most recently in 2026. The most frequent cause: severe storm (16 declarations). Churches have historically served as shelters and relief hubs in these events; congregations can register preparedness plans with their county emergency management agency.
Source: OpenFEMA Disaster Declarations Summaries.
Directory listings are mapped to Decatur 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.