The Denver skyline and the Rocky Mountains.

(Hart Van Denburg/CPR News)

Newly released federal data shows that Denver's population grew more than any other county in Colorado last year, while Broomfield County had the state's fastest growth rate.

The Denver Post reports that the U.S. Census Bureau statistics show that the number of people living in Denver reached more than 682,000 in July 2015. That was an increase of nearly 18,600 residents, or nearly 3 percent, from 2014.

The less-populated Broomfield County grew by more than 5 percent to more than 65,000 residents. It had the fifth-fastest growth rate in the country.

The census data also shows that the seven-county metro area, which also includes Boulder, Adams, Arapahoe, Jefferson and Douglas counties, has a population of nearly 3.1 million, up more than 2 percent in a year and more than 10 percent since 2010.