Colorado Area Codes
Colorado Area Codes
Blog Article
Everything You Need to Know About CO Phone Numbers
If you’re looking to target customers in Colorado, understanding the Colorado area code system is essential. This blog explains how to get a VoIP number with a CO area code and why it matters.
Visual Area Code Map for Colorado

Colorado has several telephone prefixes covering different parts of the state. These are 303, 720, 719, and 970.
Breakdown of CO Phone Codes
- 303 Area Code – Covers Denver and Boulder
- 720 Area Code – Overlay of 303
- 719 Area Code – Colorado Springs and southern CO
- 970 Area Code – Northwestern and western CO
Which Cities Use Which CO Area Code?
- Aurora – 303, 720
- Colorado Springs – 719
- Greeley – 970
- Pueblo – 719
Reason Behind Colorado’s Area Code Growth
The demand for new numbers due to technology adoption led to the introduction of new codes like 970. Read more on Wikipedia.
What is the 303 Area Code?
303 is one of the oldest area codes in the U.S.. It's now overlaid by 720.
How Overlay Area Codes Work in Colorado
An overlay area code, like 720 over 303, allows the expansion of service without disrupting existing lines. Learn more on FCC.gov.
Get a CO Local Number Online
Businesses can get a Colorado virtual number to build trust with local clients. Services like Bling’s virtual phone number platform make setup easy.
Colorado VoIP Providers
Modern businesses use VoIP phone services to assign local Colorado numbers to sales or support teams. It’s cost-effective and flexible.
Business Phone Systems for CO Area Codes
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, get more 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
What cities use the 720 area code?
Cities like Denver, Boulder, Aurora, and Lakewood 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 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 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.
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