Area code 303
The 303 area code is Denver
Area code 303 serves Denver, CO, in the Mountain time zone (United States).
303 at a glance
- Location
- Denver, CO
- State / province
- CO
- Region
- West
- Time zone
- Mountain Time
- Country
- United States
- Type
- Geographic area code
Local time right now
2:43:52 AM
Friday, July 24 · Mountain Time
Where is the 303 area code?
The 303 area code is a United States telephone area code covering Denver, CO. Numbers that start with 303 are physically tied to this region, and calls to or from 303 run on Mountain Time — worth remembering before you dial, so you don't catch someone at the wrong hour.
Is a call from 303 spam?
Not by itself. 303 is a legitimate geographic area code for Denver — plenty of real people and businesses have 303 numbers. But scammers often spoof local area codes so an unknown call looks familiar and you're more likely to pick up. If a 303 number you don't recognize calls, let it go to voicemail and check who left a message before calling back.
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