Everything You Need to Know About CO Phone Numbers
If you’re looking to expand your business into Colorado, understanding the area code structure in CO is essential. This blog explains how to get a Colorado virtual number and why it matters.
Visual Area Code Map for Colorado
Colorado has a few major dialing codes covering different parts of the state. These are the codes 303, 720, 719, and 970.
Breakdown of CO Phone Codes
- 303 Area Code – Serves the Denver Metro region
- 720 Area Code – Also covers the Denver area
- 719 Area Code – Serves Pueblo and southeastern Colorado
- 970 Area Code – Serves cities in Northern Colorado
Which Cities Use Which CO Area Code?
- Denver – 303, 720
- Colorado Springs – 719
- Greeley – 970
- Grand Junction – 970
CO Area Code Expansion Explained
The demand for new numbers due to business expansion led to the introduction of new codes like 970. Read more on Wikipedia.
Facts About the 303 Code
303 is assigned in 1947 for Denver and Boulder. It's now shared with its overlay 720.
Colorado Area Code Overlays
An overlay area code, like 720 over 303, allows multiple users in the same location to have unique numbers. Learn more on FCC.gov.
How to Get a Colorado Virtual Number
Businesses can get a local CO 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 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 click here supports routing, voicemail, SMS, and extensions – ideal for companies targeting Colorado.
How to Find an Area Code in Colorado
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 get higher response rates 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
Colorado Phone Numbers for VoIP
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
What cities use the 720 area code?
Cities like most of Central Colorado 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 local 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.
Start with the Right Colorado Number
Getting a Colorado area code is a smart move for anyone wanting local presence in CO. Whether you need a virtual phone number, VoIP service, or a business phone system, the right area code sets the tone.