Everything You Need to Know About CO Phone Numbers
If you’re looking to target customers in Colorado, understanding the area code structure in CO is essential. This blog explains how to get a VoIP number with a CO area code and why it matters.
Understanding the Area Code Regions in CO
Colorado has several telephone prefixes covering different parts of the state. These are area codes 303, 720, 719, and 970 respectively.
List of Colorado Area Codes
- 303 Area Code – Serves the Denver Metro region
- 720 Area Code – Also covers the Denver area
- 719 Area Code – Covers Colorado Springs and surrounding areas
- 970 Area Code – Northwestern and western CO
Area Code Assignment by Colorado City
- Denver – 303, 720
- Boulder – 303, 720
- Fort Collins – 970
- Grand Junction – 970
CO Area Code Expansion Explained
The demand for new numbers due to population growth led to the introduction of new codes like 970. Read more on Wikipedia.
Where is 303 Located?
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 the expansion of service without disrupting existing lines. Learn more on FCC.gov.
How to Get a Colorado Virtual Number
Businesses can get a Colorado virtual 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 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.
Should You Use a Local or Toll-Free Number in CO?
Local CO numbers like 303 or 970 tend to get higher response rates than toll-free numbers. list of Colorado area codes Use a Colorado business phone number to increase conversions.
Use Cases for Colorado Numbers
- 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.
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 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 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.
Wrap-Up: CO Area Code Strategy
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.