Denver Area Code 303
Denver, United States · Country code +1
How to dial Denver
Calling United States
011 1 303 XXXX XXXX
Exit code
Dial this first to exit US
Country code
United States country code
Area code
City/region code
Local number
The subscriber number
From the US, dial 011 to place an international call, then 1 for United States, then the area code 303 (drop any leading 0), followed by the local number. With Telvio you dial the same format — no prefix change needed.
Other cities in United States
When to call Denver
What the clock reads in Denver when it is mid-morning, early afternoon and evening where you are. Highlighted cells fall between 9:00 and 21:00 local time at the other end.
| Calling from | Offset | 09:00 | 13:00 | 19:00 |
|---|---|---|---|---|
| New York | −2:00 | 07:00 | 11:00 | 17:00 |
| Los Angeles | +1:00 | 10:00 | 14:00 | 20:00 |
| London | −7:00 | 02:00 | 06:00 | 12:00 |
| Dubai | −11:00 | 22:00 | 02:00 | 08:00 |
| Sydney | −18:00 | 15:00 | 19:00 | 01:00 |
Offsets calculated for mid-January. Countries that observe daylight saving shift by an hour for part of the year — the planner works out today's offset from your own device.
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All toolsFrequently asked questions
What is the area code for Denver?
The area code for Denver, United States is 303. Calling from outside United States, dial your exit code, then +1, then the area code without its trunk prefix, then the local number — written together as +1 303 followed by the subscriber number.
How do I call Denver from abroad?
From the United States or Canada, dial 011 + 1 + 303 + the local number. From most of Europe and from a mobile anywhere, replace the exit code with 00 or simply press and hold 0 to enter a plus sign, which works from any country without knowing its exit code.
Do I drop the 1 when calling Denver?
Yes. United States uses 1 as a trunk prefix for domestic calls, so Denver's code is written 303 locally and dialled as 303 from abroad. Keeping the trunk prefix in an international number is the single most common reason the call fails to connect.
How many digits is a Denver phone number?
A full United States number is 10 digits after the country code, area code included — for example +1 (212) 555-1234. That length is fixed by the national numbering plan, so a number one digit short is a typo rather than a valid shorter number.
How much does it cost to call Denver?
Calling a Denver landline costs $0.07 a minute with Telvio and a mobile costs $0.07. Ten minutes to a landline is $0.70. Billing is per second with no connection fee, so a short call is charged for the seconds it used rather than rounded up to a whole minute.
