The Church of Jesus Christ of Latter-day Saints, informally known as the LDS Church or Mormon Church, is a restorationist, nontrinitarian Christian denomination that is the largest denomination in the Latter Day Saint movement. The church is headquartered in the United States in Salt Lake City, Utah and has established congregations and built temples worldwide. According to the church, it has over 17 million members and over 99 thousand volunteer missionaries. As of 2012, the church was the fourth-largest Christian denomination in the U.S. As of 2023, the church reported over 6.8 million U.S. members.

Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the seat of Salt Lake County, the most populous county in the state. The city is the core of the Salt Lake City Metropolitan Statistical Area (MSA), which had a population of 1,257,936 at the 2020 census. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a 120-mile (190 km) segment of the Wasatch Front, comprising a population of 2,746,164, making it the 22nd largest in the nation. With a population of 200,133 in 2020, it is the 117th most populous city in the United States. It is also the central core of the larger of only two major urban areas located within the Great Basin.