Area Code 720


Country United States
State/Province Colorado 
Major City Denver 
Easy URL areacode.org/720 

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720 Area Code

AreaCode.org is an area code finder with detailed information on the 720 area code including 720 area code map.

Major cities like Boulder within area code 720 are also listed on this page. More area codes, including those outside of Colorado, are found on the AreaCode.org homepage.

Some telephone area codes are overlaid, requiring 10-digit dialing. AreaCode.org is your one-stop site for area code lookup, area code search, and area code locator.


Area Code 720 Detail

Area code 720 covers the central part of Colorado, including Denver, Boulder, and Aurora. Area code 303 overlays the area, requiring 10-digit dialing.

720 Area Code Location
Major Cities County State/Province
Boulder  Boulder  CO 
Denver  Denver  CO 
Lakewood  Jefferson  CO 
Westminster  Adams
Jefferson 
CO 
Other Cities By Name
Arvada  Jefferson
Adams 
CO 
Aurora  Arapahoe
Adams
CO 
Broomfield  Broomfield  CO 
Columbine  Jefferson
Arapah 
CO 
Englewood  Arapahoe  CO 
Littleton  Arapahoe
Jeffers 
CO 
Longmont  Boulder
Weld 
CO 
Thornton  Adams
Weld 
CO 


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