GUIDE TO COLORADO DIALING CODES

Guide to Colorado Dialing Codes

Guide to Colorado Dialing Codes

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Understanding Colorado Dialing Codes for Business & Personal Use

If you’re looking to establish a presence in Colorado, understanding the area code structure in CO is essential. This blog explains how to get a local business number in Colorado and why it matters.

Visual Area Code Map for Colorado

Colorado Area Code Map

Colorado has several telephone prefixes covering different parts of the state. These are the codes 303, 720, 719, and 970.

Breakdown of CO Phone Codes

  • 303 Area Code – Covers Denver and Boulder
  • 720 Area Code – Also covers the Denver area
  • 719 Area Code – Colorado Springs and southern CO
  • 970 Area Code – Northwestern and western CO

Area Code Assignment by Colorado City

  • Denver – 303, 720
  • Colorado Springs – 719
  • Fort Collins – 970
  • Pueblo – 719

Reason Behind Colorado’s Area Code Growth

The demand for new numbers due to technology adoption led to the need for new codes such as 720. Read more on Wikipedia.

Facts About the 303 Code

303 is one of the oldest area codes in the U.S.. It's now overlaid by 720.

What is an Overlay Area Code?

An overlay area code, like 720 over 303, allows new phone numbers without changing geographic coverage. Learn more on FCC.gov.

Get a CO Local Number Online

Businesses can get a local CO number to build trust with local clients. Services like Bling’s virtual phone number platform make setup easy.

VoIP Solutions for Colorado Numbers

Modern businesses use VoIP phone services to assign local Colorado numbers to sales or support teams. It’s cost-effective and flexible.

Professional Phone Setup in Colorado

To fully manage calls and teams, choose a business phone system that supports routing, voicemail, SMS, and extensions – ideal for companies targeting Colorado.

Look Up a CO Phone Number

Use tools like AreaCodeLocations.info, AllAreaCodes, or NANPA to identify or verify area codes.

Why Local Numbers Work Best in Colorado

Local CO numbers like 303 or 970 tend to build more trust than toll-free numbers. Use a Colorado business phone number to increase conversions.

Who Uses CO Area Codes?

  • Sales and outbound calls
  • Customer service or support lines
  • SMS-based marketing campaigns
  • Remote work call routing

Set Up a VoIP Line in Colorado

Choose cloud-based phone systems from Bling.cloud,RingCentral, Nextiva, or Twilio if you want scalable solutions for Colorado-based numbers.

CO Area Code FAQ Section

hosted PBX Colorado numbers

What cities use the 720 area code?

Cities like Denver Metro area use the 720 overlay.

Is 719 a mobile or landline code?

It can be both. Use copyright lookup tools to verify.

Can I get a CO number if I live outside the state?

Yes, VoIP services allow you to own a Colorado number from anywhere in the world.

Is 970 obsolete?

Yes, 970 is actively used in Northern and Western Colorado cities like Fort Collins and Grand Junction.

Which CO code is best for business?

303 and 720 are ideal if you're targeting Denver; 970 works best for northern cities; 719 is great for Colorado Springs.

Conclusion: Choosing the Right Colorado Area Code

Getting a Colorado area code is a smart move for anyone serving Colorado customers. Whether you need a virtual phone number, VoIP service, or a business phone system, the right area code sets the tone.

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