CO
Colorado is a state in the Mountain West subregion of the Western United States

It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is the eighth most extensive and 21st most populous U.S. state. The 2020 United States Census enumerated the population of Colorado at 5,773,714, an increase of 14.80% since the 2010 United States Census.
Adams county
Alamosa county
Arapahoe county
Archuleta county
Baca county
Bent county
Boulder county
Broomfield, City and county of
Chaffee county
Cheyenne county
Clear Creek county
Conejos county
Costilla county
Crowley county
Custer county
Delta county
Denver, City and county of
Dolores county
Douglas county
Eagle county
Elbert county
El Paso county
Fremont county
Garfield county
Gilpin county
Grand county
Gunnison county
Hinsdale county
Huerfano county
Jackson county
Jefferson county
Kiowa county
Kit Carson county
Lake county
La Plata county
Larimer county
Las Animas county
Lincoln county
Logan county
Mesa county
Mineral county
Moffat county
Montezuma county
Montrose county
Morgan county
Otero county
Ouray county
Park county
Phillips county
Pitkin county
Prowers county
Pueblo county
Rio Blanco county
Rio Grande county
Routt county
Saguache county
San Juan county
San Miguel county
Sedgwick county
Summit county
Teller county
Washington county
Weld county
Yuma county
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