Idaho Church Records
Before 1900 the largest religious groups in Idaho were The Church of Jesus Christ of Latter-day Saints (Mormons), the Roman Catholic, the Methodist Episcopal, and the Presbyterian churches.
To locate church records see the Directory of Churches and Religious Organizations of Idaho (Boise, Idaho: Historical Records Survey, 1940; FHL book 979.6 K24d; film 1036585 item 7; fiche 6046931).
The Idaho State Historical Society has a significant collection of Episcopal church records. They also have an index to Catholic records. The Family History Library and the LDS Church Archives have records of The Church of Jesus Christ of Latter-day Saints in Idaho as well as a few records of other churches. You can write to the following addresses to learn where church records are located:
Missions were established by religious denomination to serve the Indians.
Sacred Heart Mission (Jesuit) 1842-1960
St Joseph's Mission (jesuit) 1874-1958
Latter-day Saints (Mormons)
LDS Church Archives
50 East North Temple
Salt Lake City, UT 84150
United Methodist Archives Center
Drew University Library
P.O. Box 127
Madison, NJ 07940
Presbyterian Historical Society
United Presbyterian Church in U.S.
425 Lombard Street
Philadelphia, PA 19147
Diocese of Boise
303 Federal Way
Boise, ID 83705