St. George or Saint George is a city in and the county seat of Washington County, Utah, United States. It is Utah's fifth-most populous city and the largest outside the Wasatch Front, with a population of 95,342 at the 2020 census. The St. George metropolitan statistical area has an estimated 208,000 residents. Located in southwestern Utah on the Arizona-Utah border, it lies in the northeasternmost part of the Mojave Desert, immediately south of the Pine Valley Mountains, which mark the southern boundary of the Great Basin. St. George lies slightly northwest of the Colorado Plateau, which ends at the Hurricane Fault.