Routt County comprises the Steamboat Springs, CO Micropolitan Statistical Area.
Placer gold was found near Hahn's Peak in 1864 as part of the Colorado Gold Rush.
Routt County was created out of the western portion of Grand County on January 29, 1877. It was named in honor of John Long Routt, the last territorial and first state governor of Colorado. The western portion of Routt County was split off to form Moffat County on February 27, 1911.