Area code 303
Area code 303 is a Colorado area code, in service since 1947.
720 and 983 serve the same area as overlays, so neighbors can have numbers in any of these codes.
Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
It is in the Mountain Time zone.
- State
- Colorado
- In service since
- 1947
- Local dialing
- ten digits; dialing 1 plus ten digits also works
- Time zone
- Mountain Time
- ZIP codes
- 146
Map
Main cities in area code 303
Overlays and neighboring area codes
Counties in area code 303
Towns in area code 303
- Denver
- Aurora
- Littleton
- Boulder
- Arvada
- Englewood
- Broomfield
- Golden
- Longmont
- Westminster
- Brighton
- Castle Rock
- Commerce City
- Evergreen
- Parker
- Wheat Ridge
- Allenspark
- Bailey
- Bennett
- Buffalo Creek
- Byers
- Central City
- Conifer
- Dacono
- Dumont
- Dupont
- Eastlake
- Eldorado Springs
- Empire
- Erie
- Firestone
- Fort Lupton
- Frederick
- Georgetown
- Henderson
- Hudson
- Hygiene
- Idaho Springs
- Idledale
- Indian Hills
- Jamestown
- Keenesburg
- Kersey
- Kittredge
- Lafayette
- Larkspur
- Lone Tree
- Louisville
- Louviers
- Lyons
- Morrison
- Nederland
- Niwot
- Orchard
- Pine
- Pinecliffe
- Roggen
- Sedalia
- Shawnee
- Silver Plume
And 88 more towns: every town in Colorado.
Local numbers in area code 303
These 303 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (303) 928-2888Denver, CO$199View & buy
- (303) 390-2100Denver, CO$299View & buy
- (303) 390-4567Denver, CO$299View & buy
- (303) 876-7777Denver, CO$5,999View & buy
- (303) 222-2123Denver, CO$249View & buy
- (303) 222-2210Denver, CO$249View & buy
- (303) 222-3123Denver, CO$249View & buy
- (303) 222-4320Denver, CO$249View & buy
- (303) 222-8988Denver, CO$249View & buy
- (303) 305-1234Denver, CO$299View & buy
- (303) 390-2111Denver, CO$399View & buy
- (303) 531-1010Denver, CO$399View & buy
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