Union County, Kentucky has 37 churches in the Churches List directory, 2 of them verified and 10 with a published website. The 2020 US Religion Census counted 54 congregations and 10,092 adherents across 17 religious bodies in the county. That is 738 adherents per 1,000 residents of its 13,670 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Southern Baptist Convention | 16 | 4,934 | 360.9 |
| Catholic Church | 6 | 2,474 | 181.0 |
| United Methodist Church | 5 | 453 | 33.1 |
| Christian Churches and Churches of Christ | 4 | 439 | 32.1 |
| Non-denominational Christian Churches | 2 | 400 | 29.3 |
| National Missionary Baptist Convention, Inc. | 3 | 370 | 27.1 |
| Cumberland Presbyterian | 2 | 276 | 20.2 |
| Churches of Christ | 5 | 232 | 17.0 |
| Church of God in Christ | 2 | 170 | 12.4 |
| Christian Methodist Episcopal Church | 2 | 152 | 11.1 |
| Assemblies of God | 1 | 78 | 5.7 |
| Cumberland Presbyterian Church in America | 1 | 76 | 5.6 |
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 (13,670). Largest 12 bodies by adherents shown.
Directory traditions here: Baptist Churches (11) · Catholic (5) · Methodist (4) · Non-Denominational (3) · Christian (3) · Presbyterian (2) · Church of Christ (2) · United Methodist (2) · Evangelical (1) · Assemblies of God (1)
Directory listings are mapped to Union 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.