The St. George metropolitan area is right now the second-fastest growing in the country after the Las Vegas metropolitan area , while the Heber metropolitan area is also the second-fastest growing in the country ( right in front of Palm Coast , Florida ) . The St. George metropolitan area is currently the second-fastest growing in the country after the Las Vegas metropolitan area , while the Heber micropolitan area is also the second-fastest growing in the country ( behind Palm Coast , Florida ) .