Utah is a state in the western United States. It is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west. It also touches a corner of New Mexico in the southeast. Of the fifty U.S. states, Utah is the 13th-largest by area, and with a population over three million, the 30th-most-populous and 11th-least-densely populated. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which is home to roughly two-thirds of the population, and Washington County in the south, with more than 170,000 residents.