Complete Guide to Colorado Area Codes
If you’re looking to establish a presence in Colorado, understanding the Colorado phone code layout is essential. This blog explains how to get a Colorado virtual number and why it matters.
Visual Area Code Map for Colorado
Colorado has four main area codes covering different parts of the state. These are 303, 720, 719, and 970.
What Are the Main Area Codes in Colorado?
- 303 Area Code – Covers Denver and Boulder
- 720 Area Code – Overlay of 303
- 719 Area Code – Serves Pueblo and southeastern Colorado
- 970 Area Code – Serves cities in Northern Colorado
Which Cities Use Which CO Area Code?
- Aurora – 303, 720
- Boulder – 303, 720
- Fort Collins – 970
- Grand Junction – 970
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.
What is an Overlay Area Code?
An overlay area code, like 720 over 303, allows the expansion of service without disrupting existing lines. Learn more on FCC.gov.
Buy a Colorado Area Code for Business
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 SMS enabled Colorado numbers sales or support teams. It’s cost-effective and flexible.
Set Up a Colorado Business Line
To fully manage calls and teams, choose a business phone system that supports routing, voicemail, SMS, and extensions – ideal for companies targeting Colorado.
Colorado Area Code Lookup Tools
Use tools like AreaCodeLocations.info, AllAreaCodes, or NANPA to identify or verify area codes.
Benefits of Local vs 800 Numbers
Local CO numbers like 303 or 970 tend to feel more familiar than toll-free numbers. Use a Colorado business phone number to increase conversions.
Business and Personal Uses of Local Numbers
- 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.
Frequently Asked Questions
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 Colorado number from anywhere in the world.
Do people still use 970?
Yes, 970 is actively used in Northern and Western Colorado cities like Fort Collins and Grand Junction.
Most trusted area code for Colorado businesses?
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.