Complete Guide to Colorado Area Codes

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.

Understanding the Area Code Regions in CO

Colorado has four main area codes covering different parts of the state. These are area codes 303, 720, 719, and 970 respectively.

What Are the Main Area Codes in Colorado?

• 303 Area Code – Serves the Denver Metro region
• 720 Area Code – Shares coverage with 303
• 719 Area Code – Colorado Springs and southern CO
• 970 Area Code – Covers Fort Collins, Greeley, Grand Junction

Which Cities Use Which CO Area Code?

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

CO Area Code Expansion Explained

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 shared with its overlay 720.

Colorado Area Code Overlays

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

Buy a Colorado Area Code for Business

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

Internet Calling with CO Area Codes

Modern businesses use VoIP phone services to assign local Colorado more info 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.

Should You Use a Local or Toll-Free Number in CO?

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

Cloud Numbers with CO Codes

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

FAQs About Colorado Area Codes

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 CO number from anywhere in the world.

Is 970 still active?

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

Which area code should I use for my 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 looking to expand into the state. Whether you need a virtual phone number, VoIP service, or a business phone system, the right area code sets the tone.