720 Area Code Phone Directory

Phone Prefixes in the 720 Area Code

(720) 2XX (720) 3XX (720) 4XX (720) 5XX (720) 6XX (720) 7XX (720) 8XX (720) 9XX

State: CO

Largest City in Area: DENVER

Area code (720) is in the state of CO. Below, are the major cities in the area code (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)