720 Area Code — Denver, CO
720 area code serves Denver and Longmont in Colorado. Time zone: Mountain Time. Overlay peers: 303, 983.
Quick facts for 720 area code
What time is it in 720 area code right now?
Denver
Colorado
Current Location
Major cities in the 720 area code
Notable cities served by the 720 area code.
Overlay area codes for 720
These overlay codes share geography with area code 720 and typically require ten-digit dialing.
Other Area Codes in Colorado
Select a region to see every area code assigned there.
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Toll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsToll-free NANP code reachable across participating countries and territories.
View detailsFrequently asked questions about area code 720
Which cities does area code 720 serve?
Area code 720 serves Denver, Longmont, Fort Lupton, and Bennett.
Does area code 720 use an overlay?
Yes. Area code 720 shares its service area with overlay codes 303 and 983. An overlay allows multiple area codes to serve the same geographic area.
How do I search phone numbers in 720 area code?
Use the search box on this page or PhoneNumbers.com search, then filter by area code, city, or state to browse available numbers.