720 Area Code
Denver, CO and 10 other locations · United States
Country code +1 · ISO US
Example 720 Number
A sample number from this area code, formatted three ways.
| National | International | E.164 |
|---|---|---|
| (720) 555-0123 | +1 720-555-0123 | +17205550123 |
Try it now
Pre-filled with a 720 sample number. Edit it and click "Try It" to see the parsed result.
Cities and Regions
Locations served by the 720 area code, according to Google's libphonenumber.
- · Denver, CO
- · Aurora, CO
- · Littleton, CO
- · Highlands Ranch, CO
- · Boulder, CO
- · Parker, CO
- · Colorado
- · Longmont, CO
- · Brighton, CO
- · Castle Rock, CO
- · Broomfield, CO
How to Dial United States Numbers
From abroad
Dial +1 followed by the national number, dropping any leading 1.
Within United States
Dial 1 before the local number to make a domestic call.
Dialing out of United States
Dial 011 followed by the destination country code and number.
Nearby United States Area Codes
Frequently Asked Questions
Where is the 720 area code?
└ The 720 area code covers Denver, CO in United States.
What timezone is the 720 area code in?
└ Numbers in the 720 area code are in the America/Denver timezone.
How do I dial a 720 number?
└ From abroad, dial +1 720 followed by the local number. Within United States, dial 1720 before the local number.