720 Area Code Information
State: CO
Largest City in Area: DENVER
Where is Area Code 720? Area code (720) is in the state of CO. The PeopleSearchNow database has 1,459,726 records on file with a phone number in the area code of (720). Below, are the major cities in the area code (720).
Area Codes Starting with 7
Major Cities in 720
- DENVER, CO (782,807)
- AURORA, CO (404,733)
- LITTLETON, CO (217,636)
- LAKEWOOD, CO (193,207)
- THORNTON, CO (140,324)
- ARVADA, CO (138,919)
- ENGLEWOOD, CO (122,672)
- CENTENNIAL, CO (122,042)
- WESTMINSTER, CO (119,052)
- PARKER, CO (105,726)
Zip Codes in 720
- 80003
- 80010
- 80011
- 80012
- 80013
- 80014
- 80015
- 80017
- 80031
- 80123
- 80134
- 80204
- 80205
- 80211
- 80219
- 80220
- 80221
- 80229
- 80231
- 80239