Understanding Colorado Dialing Codes for Business & Personal Use
If you’re looking to establish a presence in Colorado, understanding the Colorado area code system is essential. This blog explains how to get a local business number in Colorado and why it matters.
Colorado Area Codes Map
Colorado has four main area codes covering different parts of the state. These are area codes 303, 720, 719, and 970 respectively.
Breakdown of CO Phone Codes
- 303 Area Code – Serves the Denver Metro region
- 720 Area Code – Overlay of 303
- 719 Area Code – Colorado Springs and southern CO
- 970 Area Code – Northwestern and western CO
Area Code Assignment by Colorado City
- Denver – 303, 720
- Boulder – 303, 720
- Fort Collins – 970
- Pueblo – 719
Why Are There Multiple Area Codes in Colorado?
The demand for new numbers due to population growth led to the need for new codes such as 720. Read more on Wikipedia.
Facts About the 303 Code
303 is the original area code for Colorado. It's now overlaid by 720.
How Overlay Area Codes Work in Colorado
An overlay area code, like 720 over 303, allows new phone numbers without changing geographic coverage. 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.
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.
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 get a local Colorado number for companies targeting Colorado.
Colorado Area Code Lookup Tools
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.
Frequently Asked Questions
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.
Do people still use 970?
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.
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.