Active Prefixes in Area Code 303

Prefix Primary City Phone Type Company
303-323-#### Denver Landline Numbers Mcimetro Access Tran...
303-324-#### Denver Wireless Numbers New Cingular Wireles...
303-325-#### Denver Landline Numbers Icg Telecom Group - ...
303-326-#### Denver Landline Numbers Qwest Corporation...
303-327-#### Denver Landline Numbers Icg Telecom Group - ...
303-328-#### Denver Landline Numbers Mcimetro Access Tran...
303-329-#### Denver Landline Numbers Qwest Corporation...
303-330-#### Denver Landline Numbers 360networks (usa) In...
303-331-#### Denver Landline Numbers Qwest Corporation...
303-332-#### Denver Wireless Numbers T-mobile Usa, Inc....
303-333-#### Denver Landline Numbers Qwest Corporation...
303-334-#### Denver Landline Numbers Mcimetro Access Tran...
303-335-#### Denver Wireless Numbers Cellco Partnership D...
303-336-#### Denver Landline Numbers Qwest Corporation...
303-337-#### Denver Landline Numbers Qwest Corporation...
303-338-#### Denver Landline Numbers Qwest Corporation...
303-339-#### Denver Landline Numbers Cbeyond Communicatio...
303-340-#### Aurora Landline Numbers Qwest Corporation...
303-341-#### Denver Landline Numbers Qwest Corporation...
303-342-#### Denver Landline Numbers Qwest Corporation...
303-343-#### Denver Landline Numbers Qwest Corporation...
303-344-#### Aurora Landline Numbers Qwest Corporation...
303-345-#### Denver Landline Numbers Icg Telecom Group - ...
303-346-#### Denver Landline Numbers Qwest Corporation...
303-347-#### Denver Landline Numbers Qwest Corporation...
303-348-#### Denver Landline Numbers Qwest Corporation...
303-349-#### Denver Wireless Numbers Cellco Partnership D...
303-350-#### Denver Wireless Numbers New Cingular Wireles...
303-351-#### Deckers Landline Numbers 360networks (usa) In...
303-352-#### Denver Landline Numbers Qwest Corporation...
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Area Code 303 Introduction

Area Code:303
Country:United States
State/Province:Colorado - CO
Major City:Denver
Time Zone:Mountain
Average property$216K
Average age 49 y/o
Average assets $41.5K
Population density 104,094 sq mi (269,837 km2)
Population 5,540,545
latitude Longitude:
37°N to 41°N / 102°03'W to 109°03'W
About 303 :
The 303 Area Code (or Area Code 303) is located in the state of CO. Area Code 303 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 3.1 million unique phone numbers and 10.9 million individuals near the city of Denver
Area code 303 was put into service. In 1988 Area code 303 was split to form area code 719. In 1995 area code 303 was split to form area code 970. In 1998 area code 303 was overlaid with area code 720.
Major cities or places
Aurora, CO>Boulder, CO>Brighton, CO>Broomfield, CO>Castle Rock, CO>Castlewood, CO>Columbine, CO>Commerce City, CO>Denver, CO>Englewood, CO>Highlands Ranch, CO>Ken Caryl, CO>Lafayette, CO>Lakewood, CO>Littleton, CO>Longmont, CO>Loveland, CO>Northglenn, CO>Parker, CO>Southglenn, CO>Thornton, CO>Westminster, CO>Wheat Ridge, CO