Ashtabula County, Ohio has 166 churches in the Churches List directory, 0 of them verified and 30 with a published website. The 2020 US Religion Census counted 163 congregations and 36,033 adherents across 38 religious bodies in the county. That is 369 adherents per 1,000 residents of its 97,567 people.
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 9 | 9,840 | 100.9 |
| Non-denominational Christian Churches | 13 | 6,720 | 68.9 |
| United Methodist Church | 22 | 4,121 | 42.2 |
| Amish Groups, undifferentiated | 33 | 3,725 | 38.2 |
| American Baptist Churches in the USA | 7 | 1,619 | 16.6 |
| Church of the Nazarene | 7 | 1,568 | 16.1 |
| Evangelical Lutheran Church in America | 5 | 1,562 | 16.0 |
| United Church of Christ | 7 | 1,121 | 11.5 |
| National Baptist Convention, USA, Inc. | 1 | 700 | 7.2 |
| Christian Churches and Churches of Christ | 4 | 602 | 6.2 |
| Presbyterian Church (U.S.A.) | 8 | 574 | 5.9 |
| Church of God (Cleveland, Tennessee) | 5 | 508 | 5.2 |
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 (97,567). Largest 12 bodies by adherents shown.
Directory traditions here: Baptist Churches (20) · Catholic (19) · Methodist (15) · Non-Denominational (14) · United Methodist (11) · Lutheran (9) · Church of God (8) · Church of the Nazarene (8) · Presbyterian (7) · Evangelical (6)
Directory listings are mapped to Ashtabula 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.