Colorado Area Codes
Colorado Area Code Map
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Colorado currently utilizes 4 area codes. When first established by AT&T and the Bell System in 1947, 303 covered the entire state of Colorado. The most recently added was 720 in 1998 as an overlay to 303. Today, 303 is the most populated with an estimated 2.9 million of the state's 5 million residents.
Area Codes for the Largest Cities in Colorado
- Arvada 303/720
- Aurora 303/720
- Boulder 303/720
- Brighton 303/720
- Broomfield 720/303
- Castle Rock 720/303
- Castlewood 720/303
- Colorado Springs 719
- Columbine 303/720
- Commerce City 303/720
- Denver 303/720
- Englewood 303/720
- Fort Collins 970
- Grand Junction 970
- Greeley 970
- Highlands Ranch 303/720
- Ken Caryl 720/303
- Lafayette 720/303
- Lakewood 720/303
- Littleton 303/720
- Longmont 303/720
- Loveland 303/720/970
- Northglenn 303/720
- Parker 303/720
- Pueblo 719
- Security-widefield 719
- Southglenn 720/303
- Thornton 720/303
- Westminster 720/303
- Wheat Ridge 303/720
Colorado Area Code List
- Acres Green
- Aetna Estates
- Allenspark
- Altona
- Applewood
- Aristocrat Ranchettes
- Arvada
- Aspen Park
- Aurora
- Bark Ranch
- Bennett
- Berkley
- Black Hawk
- Bonanza Mountain Estates
- Boulder
- Bow Mar
- Brick Center
- Brighton
- Broomfield
- Byers
- Castle Pines
- Castle Pines North
- Castle Rock
- Centennial
- Central City
- Cherry Creek
- Cherry Hills Village
- Coal Creek
- Columbine
- Columbine Valley
- Comanche Creek
- Commerce City
- Crisman
- Dacono
- Dakota Ridge
- Deer Trail
- Denver
- Derby
- Dove Valley
- Downieville-Lawson-Dumont
- East Pleasant View
- Edgewater
- Elbert
- Eldora
- Eldorado Springs
- Elizabeth
- Empire
- Englewood
- Erie
- Evergreen
- Fairmount
- Federal Heights
- Firestone
- Floyd Hill
- Fort Lupton
- Foxfield
- Franktown
- Frederick
- Genesee
- Georgetown
- Glendale
- Glendale
- Golden
- Gold Hill
- Grand View Estates
- Greenwood Village
- Gunbarrel
- Hidden Lake
- Highlands Ranch
- Holly Hills
- Hudson
- Idaho Springs
- Idledale
- Indian Hills
- Inverness
- Jamestown
- Keenesburg
- Ken Caryl
- Kiowa
- Kittredge
- Lafayette
- Lakeside
- Lakewood
- Larkspur
- Lazy Acres
- Leyner
- Littleton
- Lochbuie
- Lone Tree
- Longmont
- Louisville
- Louviers
- Lyons
- Meridian
- Morrison
- Mountain Meadows
- Mountain View
- Nederland
- Niwot
- Northglenn
- North Washington
- Paragon Estates
- Parker
- Peoria
- Perry Park
- Pine Brook Hill
- Ponderosa Park
- Rollinsville
- Roxborough Park
- St. Ann Highlands
- St. Mary's
- Sedalia
- Seven Hills
- Shaw Heights
- Sheridan
- Sherrelwood
- Silver Plume
- Stonegate
- Strasburg
- Sugarloaf
- Sunshine
- Superior
- Tall Timber
- The Pinery
- Thornton
- Todd Creek
- Twin Lakes
- Upper Bear Creek
- Valmont
- Ward
- Watkins
- Welby
- Westcreek
- Westminster
- West Pleasant View
- Wheat Ridge
- Aguilar
- Air Force Academy
- Alamosa
- Alamosa East
- Alma
- Alpine
- Antonito
- Arriba
- Avondale
- Bethune
- Beulah Valley
- Black Forest
- Blanca
- Blende
- Bonanza
- Boone
- Brandon
- Branson
- Brookside
- Buena Vista
- Burlington
- Calhan
- Campo
- Ca
- Capulin
- Cascade-Chipita Park
- Center
- Cheraw
- Cheyenne Wells
- Cimarron Hills
- City of Creede
- Coal Creek
- Coaldale
- Cokedale
- Colorado City
- Colorado Springs
- Conejos
- Cotopaxi
- Crestone
- Cripple Creek
- Crowley
- Del Norte
- Divide
- Eads
- Ellicott
- El Moro
- Fairplay
- Flagler
- Florence
- Florissant
- Fort Carson
- Fort Garland
- Fountain
- Fowler
- Garfield
- Genoa
- Gerrard
- Gleneagle
- Goldfield
- Granada
- Green Mountain Falls
- Guffey
- Hartman
- Hasty
- Haswell
- Hoehne
- Holly
- Hooper
- Howard
- Hugo
- Jansen
- Johnson Village
- Kim
- Kit Carson
- La Jara
- La Junta
- La Junta Gardens
- Lamar
- Las Animas
- La Veta
- Leadville
- Leadville North
- Limon
- Lincoln Park
- Lynn
- Manassa
- Manitou Springs
- Manzanola
- Maysville
- Midland
- Moffat
- Monte Vista
- Monument
- North La Junta
- Olney Springs
- Ordway
- Palmer Lake
- Penrose
- Peyton
- Poncha Springs
- Pritchett
- Pueblo
- Pueblo West
- Ramah
- Rock Creek Park
- Rockvale
- Rocky Ford
- Romeo
- Rye
- Saguache
- Salida
- Salt Creek
- San Acacio
- Sanford
- San Luis
- Security-Widefield
- Segundo
- Sheridan Lake
- Silver Cliff
- Simla
- Smeltertown
- South Fork
- Springfield
- Starkville
- Stonewall Gap
- Stratmoor
- Stratton
- Sugar City
- Swink
- Towner
- Trinidad
- Twin Lakes
- Two Buttes
- Valdez
- Victor
- Vilas
- Vineland
- Vona
- Walsenburg
- Walsh
- Westcliffe
- Weston
- Wiley
- Williamsburg
- Woodland Park
- Woodmoor
720 is an overlay for area code 303.
- Akron
- Amherst
- Arboles
- Aspen
- Atwood
- Ault
- Avon
- Basalt
- Battlement Mesa
- Bayfield
- Berthoud
- Blue River
- Blue Sky
- Breckenridge
- Brush
- Carbondale
- Cathedral
- Catherine
- Cattle Creek
- Cedaredge
- Chacra
- Clifton
- Collbran
- Colona
- Copper Mountain
- Cortez
- Craig
- Crawford
- Crested Butte
- Crook
- De Beque
- Delta
- Dillon
- Dinosaur
- Dolores
- Dotsero
- Dove Creek
- Durango
- Eagle
- Eaton
- Eckley
- Edwards
- El Jebel
- Estes Park
- Evans
- Fleming
- Fort Collins
- Fort Morgan
- Fraser
- Frisco
- Fruita
- Fruitvale
- Fulford
- Garden City
- Gilcrest
- Glenwood Springs
- Granby
- Grand Junction
- Grand Lake
- Greeley
- Grover
- Gunnison
- Gypsum
- Haxtun
- Hayden
- Heeney
- Hillrose
- Holyoke
- Hotchkiss
- Hot Sulphur Springs
- Idalia
- Ignacio
- Iliff
- Jackson Lake
- Joes
- Johnstown
- Julesburg
- Kersey
- Keystone
- Kirk
- Kremmling
- Laird
- Lake City
- Laporte
- La Salle
- Lewis
- Loghill Village
- Log Lane Village
- Loma
- Loveland
- McCoy
- Mancos
- Marble
- Maybell
- Mead
- Meeker
- Merino
- Milliken
- Minturn
- Montezuma
- Montrose
- Morgan Heights
- Mountain Village
- Mount Crested Butte
- Mulford
- Naturita
- New Castle
- No Name
- Norrie
- Norwood
- Nucla
- Nunn
- Oak Creek
- Olathe
- Ophir
- Orchard
- Orchard City
- Orchard Mesa
- Otis
- Ouray
- Ovid
- Padroni
- Pagosa Springs
- Palisade
- Paoli
- Paonia
- Parachute
- Parshall
- Peetz
- Phippsburg
- Piedra
- Pierce
- Pitkin
- Platteville
- Portland
- Rangely
- Raymer (New Raymer)
- Red Cliff
- Red Feather Lakes
- Redlands
- Redstone
- Redvale
- Rico
- Ridgway
- Rifle
- Saddle Ridge
- Sawpit
- Sedgwick
- Seibert
- Severance
- Silt
- Silverthorne
- Silverton
- Snowmass Village
- Snyder
- Southern Ute
- Steamboat Springs
- Sterling
- Tabernash
- Telluride
- Timnath
- Towaoc
- Trail Side
- Vail
- Vernon
- Walden
- Weldona
- Wellington
- Wiggins
- Windsor
- Winter Park
- Wolcott
- Woody Creek
- Wray
- Yampa
- Yuma
Sources: North American Numbering Plan Administration (NANPA), telecom providers, and the U.S. Census Bureau.
Copyright 2002-2019