Colorado Colorado State Facts

There are more men than women in Colorado. The overall gender ratio is 101 men to 100 women.

The Colorado flag was adopted on June 5, 1911. The flag has been ranked the 14th best U.S. flag by a leading Vexillology Organization.

The Colorado quarter was the 38th quarter released overall. The quarter was released on June 14, 2006.

Recent estimates put Colorado's population at around 5,356,000 people (22nd out of 56).The population density is 51.7 people per square mile (43rd out of 56).

Someone from Colorado is known as a Coloradan. View our List of Adjectival and Demonyms for all the States.

Colorado was the 38th state when it joined the United States on August 1, 1876. Prior to 1876, Colorado was known as "Colorado Territory."

Essential Colorado Facts

  • CO
    Postal Code
    The Colorado postal code is CO. This abbreviation has been used since the USPS first established official codes in October 1963.
  • Gender Ratio
    Gender Ratio: 101 Men to 100 Women
    Male Population: 2,691,159 men
    Female Population: 2,664,707 women
  • State Flag
    The 4 main colors in the Colorado flag are #002868, #FFFFFF, #BF0A30, and #FFD700
  • State Quarter
    The Colorado Quarter was released in June 06, 2006.
    Total Mintage: 0.57 billion.
    Engraver: Norman E. Nemeth
  • Population and Area
    Population: 5,355,866 people
    Land Area: 103,642 square miles
    Population Density: 5,355,866 people per square mile

Areas Codes in Colorado (6)

  • 303
  • 308
  • 435
  • 719
  • 720
  • 970

Colorado Counties (64)

County Top Cities
Adams County Aurora, Brighton, Commerce City, Denver, Dupont, and Eastlake
Alamosa County Alamosa, Hooper, and Mosca
Arapahoe County Aurora, Bennett, Byers, Deer Trail, Denver, and Englewood
Archuleta County Arboles, Chromo, and Pagosa Springs
Baca County Campo, Pritchett, Springfield, Two Buttes, Vilas, and Walsh
Bent County Fort Lyon, Hasty, Las Animas, and Mc Clave
Boulder County Allenspark, Boulder, Eldorado Springs, Hygiene, Jamestown, and Lafayette
Broomfield County Broomfield
Chaffee County Buena Vista, Monarch, Nathrop, Poncha Springs, and Salida
Cheyenne County Arapahoe, Cheyenne Wells, Kit Carson, and Wild Horse
Clear Creek County Dumont, Empire, Georgetown, Idaho Springs, and Silver Plume
Conejos County Antonito, Capulin, Conejos, La Jara, Manassa, and Romeo
Costilla County Blanca, Chama, Fort Garland, Jaroso, San Luis, and Sanford
Crowley County Crowley, Olney Springs, Ordway, and Sugar City
Custer County Westcliffe and Wetmore
Delta County Austin, Cedaredge, Cory, Delta, Eckert, and Hotchkiss
Denver County Denver and Littleton
Dolores County Cahone, Dove Creek, and Rico
Douglas County Castle Rock, Franktown, Larkspur, Littleton, Lone Tree, and Louviers
Eagle County Avon, Basalt, Bond, Burns, Eagle, and Edwards
Elbert County Agate, Elbert, Elizabeth, Kiowa, Matheson, and Simla
El Paso County Calhan, Cascade, Colorado Springs, Fountain, Green Mountain Falls, and Manitou Springs
Fremont County Canon City, Coal Creek, Coaldale, Cotopaxi, Florence, and Hillside
Garfield County Battlement Mesa, De Beque, Glenwood Springs, New Castle, Parachute, and Rifle
Gilpin County Black Hawk, Central City, and Rollinsville
Grand County Fraser, Granby, Grand Lake, Hot Sulphur Springs, Kremmling, and Parshall
Gunnison County Almont, Cimarron, Crested Butte, Gunnison, Ohio City, and Parlin
Hinsdale County Lake City
Huerfano County Gardner, La Veta, and Walsenburg
Jackson County Coalmont, Cowdrey, Rand, and Walden
Jefferson County Arvada, Broomfield, Buffalo Creek, Conifer, Denver, and Evergreen
Kiowa County Arlington, Eads, Haswell, and Sheridan Lake
Kit Carson County Bethune, Burlington, Flagler, Seibert, Stratton, and Vona
Lake County Climax, Granite, Leadville, and Twin Lakes
La Plata County Bayfield, Durango, Hesperus, Ignacio, and Marvel
Larimer County Bellvue, Berthoud, Drake, Estes Park, Fort Collins, and Glen Haven
Las Animas County Aguilar, Boncarbo, Branson, Hoehne, Kim, and Model
Lincoln County Arriba, Genoa, Hugo, Karval, Limon, and Rush
Logan County Atwood, Crook, Fleming, Iliff, Merino, and Padroni
Mesa County Clifton, Collbran, Fruita, Gateway, Glade Park, and Grand Junction
Mineral County Creede
Moffat County Craig, Dinosaur, Hamilton, Maybell, and Slater
Montezuma County Cortez, Dolores, Lewis, Mancos, Mesa Verde National Park, and Pleasant View
Montrose County Bedrock, Crawford, Montrose, Naturita, Nucla, and Olathe
Morgan County Brush, Fort Morgan, Hillrose, Log Lane Village, Orchard, and Snyder
Otero County Cheraw, Fowler, La Junta, Manzanola, Rocky Ford, and Swink
Ouray County Ouray and Ridgway
Park County Alma, Bailey, Como, Fairplay, Grant, and Guffey
Phillips County Amherst, Haxtun, Holyoke, and Paoli
Pitkin County Aspen, Carbondale, Meredith, Snowmass, Snowmass Village, and Woody Creek
Prowers County Granada, Hartman, Holly, Lamar, and Wiley
Pueblo County Avondale, Beulah, Boone, Colorado City, Pueblo, and Rye
Rio Blanco County Meeker and Rangely
Rio Grande County Del Norte, Homelake, Monte Vista, and South Fork
Routt County Clark, Hayden, Oak Creek, Phippsburg, Steamboat Springs, and Toponas
Saguache County Center, Crestone, Moffat, Saguache, Sargents, and Villa Grove
San Juan County Silverton
San Miguel County Egnar, Norwood, Ophir, Placerville, and Telluride
Sedgwick County Julesburg, Ovid, and Sedgwick
Summit County Breckenridge, Dillon, Frisco, and Silverthorne
Teller County Cripple Creek, Divide, Florissant, Victor, and Woodland Park
Washington County Akron, Anton, Cope, Lindon, Otis, and Woodrow
Weld County Ault, Briggsdale, Carr, Dacono, Eaton, and Erie
Yuma County Eckley, Idalia, Joes, Kirk, Vernon, and Wray
** This Document Provided By **