303 Area Code
The 303 area code shares the northeast center of the state with the 720 area code in an overlay. When the State of Colorado became recognized the entire state was originally serviced by this code. The Mile-High City of Denver sits in the Rocky Mountains and is home to the National Football League sports team the Denver Broncos, Republic Plaza, a division of the United States Mint, the University of Denver Pioneers, and the first Chipotle Mexican Grill. Denver International Airport is the most common stop for those traveling to the state or to the Mid-West. Boulder, yet another large city in this area code, has a famous rock formation called the Flatirons. This city is right where the Rocky Mountains meet the Great Plains. The city of Boulder is also home to the headquarters of USA Rugby.Area code 303 covers 28 cities in Colorado. 3 area codes are used by Colorado for approximately 4939456 residents. Its in the Mountain Time Zone.
8 service providers including, Teleport Communications, Comcast Digital, Usa Mobility, Qwest Corporation, American Messaging, Verizon Wireless, Verizon Access, Sprint Nextel, and more service this area code through 2665 telephone exchanges.
Other Colorado Area Codes:
719 720 970
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