San Juan County, Utah

San Juan County ( ) is a county in the southeastern portion of the U.S. state of Utah. As of the 2020 United States census, the population was 14,518. Its county seat is Monticello, while its most populous city is Blanding. The Utah State Legislature named the county for the San Juan River, itself named by Spanishexplorers (in honor of Saint John). San Juan County borders Arizona, Colorado, and New Mexico at the Four Corners.