Mormon State is a term used to refer to the states of Utah, Deseret, and IDAHO. Utah is a four-letter state that was settled by members of The Church of Jesus Christ of Latter-day Saints in the mid-19th century. Deseret is a seven-letter state that was the provisional name of the state of Utah from 1849 to 1851. IDAHO is a five-letter state that was also settled by members of The Church of Jesus Christ of Latter-day Saints in the mid-19th century. All three states are commonly referred to as Mormon States due to their large populations of members of The Church of Jesus Christ of Latter-day Saints.