Washington, Iron Fastest Growing Counties
(St. George, UT) -- Washington and Iron counties are the fastest growing counties in the state. U.S. Census data shows that Washington County saw a population growth rate of 30-point-five-percent since the 2010 data and Iron County saw an increase of 24-point-one-percent.
Overall, Utah is the fastest growing state in the country according to the Census data as the state's population growth rate was 18-point-four-percent.