Warren County, Illinois has 41 churches in the Churches List directory, 0 of them verified and 9 with a published website. The 2020 US Religion Census counted 31 congregations and 5,733 adherents across 16 religious bodies in the county. That is 341 adherents per 1,000 residents of its 16,833 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 1 | 1,590 | 94.5 |
| Non-denominational Christian Churches | 7 | 1,390 | 82.6 |
| United Methodist Church | 6 | 1,113 | 66.1 |
| Christian Churches and Churches of Christ | 2 | 481 | 28.6 |
| Presbyterian Church (U.S.A.) | 3 | 349 | 20.7 |
| African Methodist Episcopal Church | 1 | 202 | 12.0 |
| Evangelical Lutheran Church in America | 1 | 180 | 10.7 |
| Amish Groups, undifferentiated | 1 | 134 | 8.0 |
| American Baptist Churches in the USA | 1 | 120 | 7.1 |
| Midwest Beachy Amish-Mennonite | 1 | 70 | 4.2 |
| Christian Church (Disciples of Christ) | 3 | 50 | 3.0 |
| Church of the Nazarene | 1 | 18 | 1.1 |
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 (16,833). Largest 12 bodies by adherents shown.
Sunday Services at 10AM and 6PM also Youth and Children Ministry at 9AM Thursday Service at 7PM Solid Rock Academy Grades K-12 Call for more information
Sunday School 9:15 Morning Worship 10:30
Directory traditions here: Baptist Churches (8) · Christian (5) · Presbyterian (4) · Methodist (4) · United Methodist (3) · Bible (3) · Assemblies of God (2) · Church of the Nazarene (2) · Non-Denominational (2) · Missionary (1)
Directory listings are mapped to Warren 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.