Telephone Area Code 303

Area code 303 serves the state of Colorado and located in the Mountain (GMT -07:00) time zone. 133,203 phone numbers in the 303 area code can be found in 19 cities or locations. 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.

area codes

Area Code 303 Information

Area Code
303
Country
United States
State/Province
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

Major cities or places in Colorado within 303 area code

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

Zip codes served by 303 area code

  • 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

Carriers providing by 303 area code

  • 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 number(s) in area code 303

  • 303-597-9426
  • 303-946-5709
  • 303-621-6006
  • 303-505-1504
  • 303-659-0525
  • 303-287-3800
  • 303-751-7307
  • 303-683-6620
  • 303-853-3200
  • 303-242-5072
  • 303-320-5570
  • 303-702-8450
  • 303-573-7469
  • 303-982-5600
  • 303-817-0311
  • 303-809-1252
  • 303-677-9786
  • 303-454-3914
  • 303-331-7636
  • 303-257-0858
  • 303-913-8459
  • 303-300-8906
  • 303-359-2390
  • 303-241-3530
  • 303-209-3681
  • 303-699-2727
  • 303-481-1819
  • 303-543-7074
  • 303-437-0837
  • 303-390-3188
  • 303-479-3361
  • 303-502-2311
  • 303-647-9659
  • 303-960-3814
  • 303-906-5300
  • 303-901-2970
  • 303-596-9443
  • 303-548-6222
  • 303-536-8166
  • 303-529-2998
  • 303-524-5447
  • 303-513-4169
  • 303-498-7377
  • 303-383-6478
  • 303-309-4892
  • 303-927-1138
  • 303-725-0236
  • 303-856-4496
  • 303-986-6441
  • 303-264-4723
  • 303-952-4252
  • 303-569-8185
  • 303-617-0090
  • 303-647-4870
  • 303-569-6462
  • 303-919-4232
  • 303-847-8223
  • 303-591-3889
  • 303-532-5390
  • 303-532-5373
  • 303-507-0223
  • 303-397-3155
  • 303-204-5001
  • 303-778-5814
  • 303-699-2884
  • 303-887-8012
  • 303-227-3174
  • 303-999-1823
  • 303-961-5155
  • 303-495-4454
  • 303-578-5311
  • 303-210-1411
  • 303-332-4055
  • 303-847-6072
  • 303-449-2472
  • 303-601-9726
  • 303-250-8195
  • 303-984-0378
  • 303-931-4113
  • 303-356-9090
  • 303-835-9262
  • 303-298-0821
  • 303-868-8783
  • 303-819-2558
  • 303-916-9173
  • 303-641-5652
  • 303-519-4948
  • 303-483-1188
  • 303-472-1360
  • 303-875-8264
  • 303-425-0931
  • 303-378-9459
  • 303-684-9675
  • 303-828-6111
  • 303-785-5389
  • 303-596-7146
  • 303-567-4419
  • 303-549-2595
  • 303-515-1102
  • 303-498-7543
  • 303-455-8888
  • 303-348-3518
  • 303-348-3509
  • 303-243-3956
  • 303-636-2900
  • 303-270-1149
  • 303-536-8560
  • 303-816-3957
  • 303-647-5201
  • 303-284-6925
  • 303-422-7967
  • 303-882-2443
  • 303-882-8714
  • 303-223-5941
  • 303-476-1180
  • 303-437-5383
  • 303-567-4415
  • 303-953-0111
  • 303-816-8993
  • 303-218-2175
  • 303-986-8152
  • 303-982-0474
  • 303-963-8961
  • 303-919-6341
  • 303-912-1210
  • 303-669-9920
  • 303-588-1730
  • 303-552-6099
  • 303-525-1502
  • 303-442-6781
  • 303-360-3992
  • 303-349-3978
  • 303-902-9210
  • 303-345-0573
  • 303-373-1680
  • 303-873-2218
  • 303-912-2434
  • 303-364-8119
  • 303-668-7193
  • 303-514-1003
  • 303-818-3491
  • 303-963-8919
  • 303-945-4461
  • 303-778-1000
  • 303-214-9478
  • 303-209-6640
  • 303-564-5431
  • 303-995-5536
  • 303-963-8673
  • 303-949-4939
  • 303-918-3071
  • 303-823-4973
  • 303-818-1138
  • 303-818-0123
  • 303-809-2679
  • 303-804-4600
  • 303-717-1122
  • 303-697-4468
  • 303-697-4463
  • 303-564-7546
  • 303-529-8775
  • 303-507-3678
  • 303-495-4288
  • 303-437-8197
  • 303-437-8185
  • 303-390-5765
  • 303-373-7794
  • 303-358-4930
  • 303-335-7750
  • 303-327-9233
  • 303-326-6777
  • 303-319-1774
  • 303-263-3170
  • 303-242-6966
  • 303-219-8942
  • 303-219-8108
  • 303-523-9863
  • 303-512-3253
  • 303-324-6781
  • 303-646-7163
  • 303-607-7099
  • 303-399-8449
  • 303-921-2995
  • 303-754-1736
  • 303-275-0688
  • 303-963-8187
  • 303-459-5490
  • 303-325-3780
  • 303-325-3382
  • 303-495-1200
  • 303-536-6913
  • 303-309-1173
  • 303-416-2992
  • 303-578-3295
  • 303-578-7914
  • 303-325-3620
  • 303-221-6590
  • 303-242-3148
  • 303-586-6567
  • 303-500-1495

Recent comments in area code 303

  • 303-775-4555

    When I answered there was a recording for "card holder services" wanting to offer me lower interest rates. The only option to talk to an operator was to push 1, which took me to a foreign (non-American) call bank. When I told the operator to take me off of the call list, he rudely asked, "But don't you know the nature of this call?" I said to take me off the call list again, and he told me, "If you really want your number off of the call list, you have to be on hold for about one minute." I said OK. He set the phone down and proceeded to talk to his coworkers and sing songs just waiting for me to hang up, which I did after waiting about 3 minutes. This is very clearly spam.

    Created by Mary Edet, 14 day ago
  • 303-809-0705

    I received a text message simply saying "Sorry. I can't talk right now." I have no record of ever calling or texting this number.

    Created by Abigail Doherty, 14 day ago
  • 303-726-0182

    Received multiple calls from this number, asked for a Kallie, I told them they have the wrong number and they hung up without saying anything else.

    Created by Kate, 14 day ago
  • 303-781-0020

    303-781-0020 is a Clayton family phone number, used by the Clayton family, continuously since original issue in the 1950’s. It is currently the home phone number of Scott & Linda Clayton residing in Highlands Ranch, CO.

    Created by Scott Clayton, 14 day ago
  • 303-284-6296

    They call daily never leave a message and only the number comes up on caller ID. I believe this to be a robo spam call.

    Created by Meri, 14 day ago
  • 303-332-4475

    User of phn number 303-332-4475 sent text msgs to me, cussing me out and accused me of calling them which I did not. I have no idea who that is.

    Created by Dmc, 14 day ago
  • 303-517-6553

    Received text 'Sweet babe :)' and inquired about who it was that sent it in a response text back to the number. Person responded that is was new phone.

    Created by Anonymous
  • 303-602-2000

    For the past hour I have been getting calls continually from this number. When I answer, no one is there. When I call it back I get a recording saying this is a non-working number for Denver Health.

    Created by Anonymous
  • 303-474-4178

    They keep calling and hanging up when I say that I need to take a message. Hubby is hard of hearing.

    Created by Anonymous
  • 303-632-7087

    Anna Hair Braiding & Salon Address: 1450 S. Havana St., Aurora, CO 80012 Phone: 3036327087 Website: http://annabraidingsalon.com Hair Salon, Braiding, Hair Styling. Hair Salon, Braiding, Haircuts, Hair Extension, Hair Stylist

    Created by Anonymous
  • 303-499-1438

    What bull*. "This is an important message concerning your credit card payments. This is your last call concerning the opportunity to save money on your credit card payments. This is associated with the economic stimulus."

    Created by Anonymous
  • 303-776-2910

    Hello, I lost the number for O. Kenneth Alfred MA, EdF, LPC and I want to recommend them to a friend of mine, because I was very pleased with their services. I found this number, is it the right one?

    Created by Anonymous
  • 303-532-1672

    it is Everest College & when you have ever shown interest to 'em in the past, these people will ring you over & over.

    Created by Anonymous
  • 303-293-2326

    we are getting constant calls from this number and want them to stop.it's some debt protection number.

    Created by Anonymous
  • 303-217-7634

    Caller ID says it's from the Lehman Brothers. Just a mortgage company calling to bug us yet again.

    Created by Anonymous
  • 303-437-4393

    Unavailable until futher notice from The courts u have The Kids Number To reach them btw 730 am And 800 am resuming at 4 till 7 pm

    Created by Anonymous
  • 303-219-9286

    This number started calling three times a day beginning on 7/23. I don't answer so I haven't tried the call back number.

    Created by Anonymous
  • 303-463-5282

    Wanted to know my Business Tax ID Number to do a foreclosure property report. Upon checking the lokbox, found out it was not the right code.

    Created by Anonymous
  • 303-963-7738

    These people call me at least two times a day and want to know if I am affiliated with any construction companies dealing with Marshall Construction. I told them that I was not at liberty to say. What are they fishing for?

    Created by Anonymous
  • 303-452-1124

    i have recived 2 rings with this no. each of the past 2 weeks. No msg left. we have no clue who it might be.

    Created by Anonymous
  • 303-214-2696

    This number calls and never leaves a message,when I answer some one hangs up.this happens about seven or eight times a day.

    Created by Anonymous
  • 303-368-0114

    i believe its from a group called aca finance. they have a colorado area code so they should be in the greater denver area. i don't know what they do however. they call me looking for my friend, my name was given as a referance. i don't believe they are trying to scam or sell anything.

    Created by Anonymous
  • 303-319-4736

    Just received a picture message of a very cute hispanic chick. The number does not come up in my phone, nor do I recognize this girl. I'm assuming spam.

    Created by Anonymous
  • 303-450-0535

    I get calls from telemarketer slime on my Verizon cell phone all the time. I never answer unless I recognize the number/area code and they usually don't leave any messages. I suspect that someone who was pissed at me put my number into telemarketer hell. Question is, how do I stop it short of changing my cell number? 712-429-0367 713-216-0248 614-729-6081 614-729-6077 609-947-6234 330-972-0319 303-450-0535

    Created by Anonymous
  • 303-997-0461

    I also got a call in regards to a resume I posted online. They were very hard to understand in the voicemail they left, but I think they said it was for a Bankers Life and Casualty Company.

    Created by Anonymous
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