Utah County is a county in the U.S. state of Utah. As of the 2010 United States Census, the population was 516,564, thus making it Utah's second-most populous county. The county seat and largest city is Provo, which is the state's third-largest city. Utah County is part of the Provo-Orem, UT Metropolitan Statistical Area as well as the Salt Lake City-Provo-Orem, UT Combined Statistical Area. In 2010, the center of population of Utah was in Utah County, in the city of Saratoga Springs. Utah County is one of seven counties in the United States to have the same name as its state.