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Utah is currently the 4th fastest-growing state in the United States. Utah's population in 2018 makes it the 34th most populous state in the country. In 2018, the estimated population of Utah is 3.16 million, up significantly from the 2010 Census-confirmed population of 2.76 million.What is the population of Utah County Utah?
Utah County is a county in the U.S. state of Utah. As of the 2010 census, the population was 516,564, thus making it Utah's second-most populous county.