Adams County, Illinois has 101 churches in the Churches List directory, 2 of them verified and 37 with a published website. The 2020 US Religion Census counted 109 congregations and 49,036 adherents across 37 religious bodies in the county. That is 746 adherents per 1,000 residents of its 65,729 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 9 | 15,124 | 230.1 |
| Christian Churches and Churches of Christ | 6 | 11,147 | 169.6 |
| Non-denominational Christian Churches | 18 | 9,414 | 143.2 |
| Lutheran Church--Missouri Synod | 5 | 2,512 | 38.2 |
| United Methodist Church | 14 | 2,119 | 32.2 |
| Evangelical Lutheran Church in America | 7 | 1,780 | 27.1 |
| United Church of Christ | 4 | 1,239 | 18.9 |
| Church of Jesus Christ of Latter-day Saints | 2 | 924 | 14.1 |
| Assemblies of God | 4 | 663 | 10.1 |
| Muslim Estimate | 1 | 590 | 9.0 |
| Lutheran Congregations in Mission for Christ | 3 | 430 | 6.5 |
| National Missionary Baptist Convention, Inc. | 1 | 400 | 6.1 |
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 (65,729). Largest 12 bodies by adherents shown.
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Directory traditions here: Catholic (16) · Methodist (15) · Baptist Churches (13) · Christian (12) · Lutheran (11) · United Methodist (6) · Assemblies of God (5) · Non-Denominational (4) · United Church of Christ (3) · Church of Christ (2)
Directory listings are mapped to Adams 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.