A new Gallup survey shows six in 10 Utah residents identify as Mormon.
That's more than double the proportion in any other state. Idaho ranks second with 24 percent of its residents belonging to The Church of Jesus Christ of Latter-day Saints.
The survey is based on phone interviews with 500 adults in each state done in 2013.
Past Gallup surveys show the percentage of Utah residents who call themselves Mormon has held steady around 60 percent for the past six years.
Utah and Idaho are the only states where more than 10 percent of residents are Mormons. In Wyoming, 9 percent belong to the LDS church. About 4-5 percent of residents in Nevada, Montana, Arizona, Alaska and Hawaii are LDS.
Utah has the smallest percentage of Protestants of any state.