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303 Area Code (Colorado) Toll Free? Scam? Who's Calling?

The 303 area code is a three-digit area code that contains 26 unique phone numbers. It serves the state of Colorado.

  • State

    Colorado, CO

  • Major City

    Denver

  • Timezone

    Mountain

  • Current Time

    2023-03-24 06:46:19

Phone Numbers That Start with 303

  • Phone Number
  • Caller Type
  • Comment
  • (303) 209-2049
    Comenity Bank
    keeps calling and just hangs up once i pick up.
  • (303) 255-5125
    Comenity Bank
    Unwanted phone calls
  • (303) 255-5351
    Comenity Bank
    Asked to speak to a random person and then doubted it wasn't me
  • (303) 255-5352
    Comenity Bank
    Got a call from 303-255-5352. I answered The phone and a pre recording asked me to call back 1 (800) 749-0571. I've called back twice and these folks hang up the phone each time!! Scam callers don't answer the phone. Block them
  • (303) 256-1030
    I Do No Know, But They Are In Colorado
    Robo call...left voice-mail message that was a recording about getting dentures. I called there about a month ago to inquire about dentures for my mom. Now they won't stop calling me and leaving recorded messages about dentures. FYI...my mom went with a different company.
  • (303) 323-8690
    Comes Up Colorado, No Name
    Calls 10 times a day , and all accounts are current says I owe money and am past due....
  • (303) 333-3333
    Taxi
    . Thank you ?
  • (303) 369-0064
    Budget Control
    No message left. Phone told me it was SPAM!
  • (303) 376-8262
    Uti
    Probable realestate scam keeps calling over and over abandons the call
  • (303) 473-1020
    University Of Colorado Foundation
    Pretending to be from CU. Cameron Sawyer was the name given. Name: James Leon Smotherman #### Fairway Dr Colorado Springs, CO 80909 #### Monterey Rd Colorado Springs, CO 80910 This is who the number is registered with.
  • (303) 479-3828
    Denver Co
    Several days calling no message but calls 4 times in a row several times daily.
  • (303) 479-5873
    "Fidelity"
    Said they were from Fidelity but there was no standard "your call may be recorded" type prompt and they mentioned a contact called "Peter S******r" who is not my Fidelity rep. Totally seems like Phishing call. Blocked that B.
  • (303) 500-1594
    Telemarketer
    this number called me but never says a word and when you call back it says the number is not in service.
  • (303) 502-5663
    Ta Den
    I could not identify the owner of this number on my cell phone and did not answer.
  • (303) 676-8297
    Lowry AFB
    Called my number 40 times in a few minutes as my call block function cut it off but recorded the actual calls. Just crazy had these been able to go thru. This is a robo caller and more than likely a scam.
  • (303) 718-1628
    Jim Mueller
    Why are there two reports of smuggling loaded guns in the airport when you search this person? One instance reports that he had his teenage daughter in on the offense.
  • (303) 731-1833
    Aurora, CO
    Received an email with this number attached saying my purchase was approved for $470.00 through PayPal. Never heard of company and didn't authorize any purchases from them
  • (303) 731-2438
    Debt Collector
    would not care to have phone calls from this this number....
  • (303) 731-5314
    Unknown
    Idiot never said anything.
  • (303) 736-9748
    Ed P CO
    Valid call

Major Counties Served by 303 Area Code

  • County
  • Total Population
  • % of 303
  • % of County
  • Denver
    600,158
    2%
    100%
  • Arapahoe
    572,003
    12%
    100%
  • Jefferson
    534,543
    11%
    100%
  • Adams
    441,603
    17%
    100%
  • Boulder
    294,567
    11%
    100%
  • Douglas
    285,465
    12%
    99%
  • Broomfield
    55,889
    0%
    100%
  • Weld
    252,825
    11%
    19%
  • Elbert
    23,086
    10%
    37%
  • Clear Creek
    9,088
    5%
    93%
  • Gilpin
    5,441
    2%
    100%
  • Park
    16,206
    5%
    16%

Major Cities Served by 303 Area Code

  • City
  • Total Population
  • % of 303
  • % of City
  • Denver
    600,158
    2%
    100%
  • Aurora
    325,078
    2%
    100%
  • Lakewood
    142,980
    1%
    100%
  • Thornton
    118,772
    1%
    100%
  • Arvada
    106,433
    1%
    100%
  • Westminster
    106,114
    0%
    100%
  • Centennial
    100,377
    0%
    100%
  • Boulder
    97,385
    0%
    100%
  • Highlands Ranch
    96,713
    0%
    100%
  • Longmont
    86,270
    0%
    100%
  • Broomfield
    55,889
    0%
    100%
  • Castle Rock
    48,231
    0%
    100%
  • Commerce City
    45,913
    1%
    100%
  • Parker
    45,297
    0%
    100%
  • Littleton
    41,737
    0%
    100%
  • Northglenn
    35,789
    0%
    100%
  • Brighton
    33,352
    0%
    100%
  • Ken Caryl
    32,438
    0%
    100%
  • Dakota Ridge
    32,005
    0%
    100%
  • Englewood
    30,255
    0%
    100%
  • Wheat Ridge
    30,166
    0%
    100%
  • Lafayette
    24,453
    0%
    100%
  • Columbine
    24,280
    0%
    100%
  • Golden
    18,867
    0%
    100%
  • Louisville
    18,376
    0%
    100%
  • Sherrelwood
    18,287
    0%
    100%
  • Erie
    18,135
    0%
    100%
  • Welby
    14,846
    0%
    100%
  • Greenwood Village
    13,925
    0%
    100%
  • Superior
    12,483
    0%
    100%
  • Federal Heights
    11,467
    0%
    100%
  • Berkley
    11,207
    0%
    100%
  • Cherry Creek
    11,120
    0%
    100%
  • The Pinery
    10,517
    0%
    100%
  • Castle Pines North
    10,360
    0%
    100%
  • Lone Tree
    10,218
    0%
    100%
  • Firestone
    10,147
    0%
    100%
  • Gunbarrel
    9,263
    0%
    100%
  • Roxborough Park
    9,099
    0%
    100%
  • Evergreen
    9,038
    0%
    100%
  • Stonegate
    8,962
    0%
    100%
  • Frederick
    8,679
    0%
    100%
  • Derby
    7,685
    0%
    100%
  • Fairmount
    7,559
    0%
    100%
  • Fort Lupton
    7,377
    0%
    100%
  • Applewood
    7,160
    0%
    100%
  • Twin Lakes
    6,101
    0%
    100%
  • Cherry Hills Village
    5,987
    0%
    100%
  • Sheridan
    5,664
    0%
    100%
  • Dove Valley
    5,243
    0%
    100%

Popular Phone Carriers

  • Landline

    Prefixes
    Carrier
    • 57%
      Qwest Corporation
    • 4%
      Icg Telecom Group
    • 3%
      Teleport America
    • 3%
      Mcimetro Access Transmission Services
    • 2%
      Global Crossing Local Services
    • 2%
      Level 3
    • 1%
      Comcast Phone
    • 5%
      Other
  • Wireless

    Prefixes
    Carrier
    • 7%
      Verizon Wireless
    • 4%
      Usa Mobility Wireless
    • 4%
      Cingular
    • 4%
      Sprint
    • 1%
      T-mobile
    • 1%
      American Messaging (am)
    • 1%
      Contact Paging
    • 1%
      Other

Statistics for Phone Prefixes in 303 Area Code

From these two pie charts, you can see the percentage of phone prefixes that have been assigned and the types of their usage.

Assigned

Usage

What Is the Location and Time Zone of Area Code 303?

Area code 303 is located in the Mountain Time Zone.

What Is the Origin of Area Code 303?

Area code 303 has been in use since 1947. But what is the origin of the area code?The 303 area code was originally assigned to northeastern Colorado. Denver was the largest city in the region, and the code served the entire metropolitan area.

In 1996, area code 303 was split. A new area code, area code 720, was assigned to the Denver area. The 303 code was retained for northeastern Colorado.

Today, the 303 area code serves the following counties: Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver, Douglas, Elbert, Gilpin, Jefferson, and Park.

What Areas Are Serviced by Code 303?

Code 303 provides emergency and disaster services to a wide variety of areas, including: - Commercial and Residential Properties

- Businesses and Organizations

- Government and Municipal Buildings

- Schools and Universities

- Hospitals and Healthcare Facilities

In the event of an emergency, Code 303 is available 24/7 to provide assistance. Our team of experienced professionals is equipped to handle any disaster, from fires and floods to hazardous material spills and terrorist attacks.

We encourage everyone in our service area to take advantage of our free emergency preparedness training. This training can help you and your family stay safe in the event of a disaster. For more information, please visit our website or call us at (555) 555-1212.

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