phone book, or the business directory.

Area Code 303

Located in the Mountain (GMT -07:00) time zone. Area code 303 serves the state of Colorado. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 303 is a General Purpose Code. 303 service area does overlap with 720 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

Information for Area Code 303

Area Code
303
Country
United States
State
Colorado (CO)
Major City
Denver
Time Zone
Mountain (GMT -07:00)
Population
2,475,317
White Population
1,998,371
Black Population
118,961
Hispanic Population
439,614
Asian Population
71,983
Hawaiian Population
2,392
Indian Population
21,986
Other Population
190,006
Male Population
1,240,766
Female Population
1,234,551
Avg House Value
$188,956.41
Avg Household Income
$54,536.97
Avg Persons Per Household
2.56
Median Age
35.28
Median Age (Male)
34.60
Median Age (Female)
36.06

List of Cities in Area Code Overlay Complex 270

  • Denver
  • Littleton
  • Longmont
  • Deer Trail
  • Fort Lupton
  • Orchard
  • Brighton
  • Byers
  • Lyons
  • Allenspark
  • Keenesburg
  • Golden
  • Aurora
  • Idaho Springs
  • Pine
  • Bennett
  • Strasburg
  • Hudson
  • Louisville

List of Zip Codes in Area Code 303

  • 80014
  • 80012
  • 80231
  • 80204
  • 80212
  • 80214
  • 80215
  • 80226
  • 80265
  • 80294
  • 80202
  • 80010
  • 80002
  • 80220
  • 80403
  • 80401
  • 80603
  • 80602
  • 80601
  • 80222
  • 80237
  • 80224
  • 80241
  • 80234
  • 80233
  • 80011
  • 80018
  • 80019
  • 80211
  • 80216
  • 80207
  • 80206
  • 80221
  • 80223
  • 80203
  • 80209
  • 80210
  • 80621
  • 80239
  • 80299
  • 80218
  • 80238
  • 80126
  • 80129
  • 80122
  • 80227
  • 80236
  • 80123
  • 80643
  • 80229
  • 80503
  • 80501
  • 80504
  • 80642
  • 80228
  • 80439
  • 80027
  • 80230
  • 80452
  • 80136
  • 80102
  • 80135
  • 80470
  • 80235
  • 80127
  • 80232
  • 80105
  • 80219
  • 80510
  • 80130
  • 80112
  • 80124
  • 80103
  • 80540
  • 80290
  • 80293
  • 80264
  • 80652
  • 80649
  • 80111

SPs and Telephone companies in Area Code 270

  • New Cingular Wireless Pcs, Llc
  • Qwest Corporation
  • Level 3 Telecom Of Colorado, Llc - Co
  • Mcimetro Access Transmission Services Llc
  • Level 3 Communications, Llc - Co
  • Xo Colorado, Llc
  • Bijou Telephone Cooperative Association, Inc.
  • Contact Paging Of Colorado, Inc.
  • Cellco Partnership Dba Verizon Wireless - Co
  • Teleport Communications America, Llc - Co
  • Icg Telecom Group - Co
  • Usa Mobility Wireless, Inc.
  • Roggen Telephone Cooperative Co.
  • Communications Unlimited
  • Interlink Adv Svc Dba Forethought.net - Co
  • T-mobile Usa, Inc.
  • Ymax Communications Corp. - Co
  • Sprint Spectrum L.p.
  • Comcast Phone Of Colorado, Llc - Co
  • Eschelon Telecom Of Colorado, Inc. - Co
  • Neutral Tandem-colorado, Llc - Co
  • American Messaging Services, Llc
  • Global Crossing Local Services, Inc.-co
  • N.e. Colorado Cellular, Inc.
  • At&t Local
  • Cbeyond Communications, Llc - Co
  • Iloka, Inc. Dba Newcloud Networks - Co
  • Nextwave Telecom, Inc Dba Nextwave Wireless
  • Live Wire Networks, Inc. - Co
  • Convergent Communications, Inc. - Co
  • Onvoy, Llc - Co
  • Elbert County Wireless, Llc
  • 4dvision, Llc - Co
  • Eastern Slope Rural Telephone Association, Inc.
  • Big River Telephone Company, Llc - Co
  • Strasburg Telephone Co.
  • Mcleodusa Telecommunications Services, Inc.- Co

Phone Numbers Beginning With 303