The Church of Jesus Christ of Latter-day Saints (LDS Church) has more church members in Utah than any other U.S. state or country. The LDS Church is also the largest denomination in Utah.
Historically, the percentage of Utahns who are Latter-day Saints was constantly increasing and went from six-tenths in 1920 to three-fourths in 1990, however, since then the proportion has decreased even though the number of church members has grown nominally. Much of this is due to the rise of secularism in the state, despite rapid population growth. In 2008, the US Census Bureau determined Utah to be the fastest growing state in the country in terms of population growth.
List of LDS Church adherents in each county as of 2010 according to the Association of Religion Data Archives:
As of February 2026, Utah had the following stakes and districts:
Due to nonmembers coming into the state, Utah officially became a mission field with its own headquarters in 1975 when the Utah Salt Lake City Mission was organized. Previously, full-time missionaries worked in parts of Utah under the leadership of missions headquartered in other states.
As of July 2024, Utah has 13 missions and a Missionary Training Center.
In addition to these missions, the New Mexico Farmington Mission covers Southeastern Utah.
The first training for missionaries began in 1832 with the School of the Prophets. Some further educational centers were:
And finally, the Provo Missionary Training Center (1978)
As of June 2025, Utah has 24 operating temples, with 8 others announced or under construction.
Latter-day Saints had a significant role in establishing and settling communities within the "Mormon Corridor", including the following in Utah: