Idaho has 2,731 church listings in the Churches List directory, spread across 236 cities and towns. 2,016 listings are verified, 2,563 include a phone number, and 1,794 publish a website. The 2020 US Religion Census counted 2,392 congregations of 104 religious bodies in Idaho, with 918,776 reported adherents across 44 counties. 42 Idaho church buildings hold National Register of Historic Places listings, and 10 of the state's church websites were already archived by the Internet Archive before 2001.
| Religious body | Congregations | Adherents |
|---|---|---|
| Church of Jesus Christ of Latter-day Saints | 1,042 | 410,944 |
| Catholic Church | 98 | 203,790 |
| Non-denominational Christian Churches | 194 | 98,996 |
| Christian Churches and Churches of Christ | 25 | 27,442 |
| Assemblies of God | 89 | 26,067 |
| United Methodist Church | 56 | 24,561 |
| Church of the Nazarene | 53 | 23,106 |
| Jehovah's Witnesses | 77 | 16,840 |
| Seventh-day Adventist Church | 61 | 11,828 |
| Southern Baptist Convention | 105 | 10,429 |
| Lutheran Church--Missouri Synod | 43 | 8,097 |
| Evangelical Lutheran Church in America | 32 | 6,333 |
| American Baptist Churches in the USA | 31 | 5,504 |
| Episcopal Church | 32 | 4,813 |
| Presbyterian Church (U.S.A.) | 40 | 3,961 |
| Tradition | Listings |
|---|---|
| Church of Jesus Christ Of Latter Day Saints | 562 |
| Unknown Denomination | 323 |
| Baptist Churches | 251 |
| Non-Denominational | 236 |
| Catholic | 152 |
| Lutheran | 109 |
| Christian | 89 |
| Assemblies of God | 80 |
| Church of the Nazarene | 73 |
| Seventh Day Adventist | 67 |
| Community | 61 |
| Presbyterian | 53 |
| United Methodist | 51 |
| Church of Christ | 48 |
| Episcopal | 46 |
Directory figures are live counts from the Churches List database for Idaho (ID) as of October 2026. Congregations and adherents come from the 2020 US Religion Census, a county-level enumeration reported by religious bodies and aggregated here to the state; its methodology differs from a directory count and the two will not match. Historic-register counts join National Register of Historic Places listings to directory churches. Statistics for other states: Texas California Pennsylvania North Carolina Ohio Florida Illinois Georgia New York Michigan. See also the national statistics page, the Idaho directory, and dataset licensing.