Area Code 720: Denver Coverage Map, Cities, and Dialing Guide (2025)
Everything you need to know about area code 720 in Colorado: coverage area map, major cities served, 10-digit dialing rules, and how to get a 720 phone number for your Denver business.
Frequently Asked Questions
What area code is Denver Colorado?
Why does Denver have two area codes?
How to dial a 720 area code number?
What cities are in area code 720?
Where is area code 720 located in Colorado?
When should I use 10-digit dialing in Denver?
What is the overlay area code for 303?
Can I dial 7 digits in the 720 area code?
What is the latitude and longitude of Arvada, Colorado?
Who regulates area code 720?
How to find information on Colorado PUC regulations?
