Colorado Area Codes
Understanding Colorado Dialing Codes for Business & Personal Use
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 local business number in Colorado and why it matters.
Visual Area Code Map for Colorado
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 – Used primarily in Denver
- 720 Area Code – Shares coverage with 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
- Colorado Springs – 719
- Fort Collins – 970
- Pueblo – 719
CO Area Code Expansion Explained
The demand for new numbers due to business expansion led Colorado business phone number to the creation of overlay codes like 720. 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 shared with its overlay 720.
How Overlay Area Codes Work in Colorado
An overlay area code, like 720 over 303, allows multiple users in the same location to have unique numbers. Learn more on FCC.gov.
Get a CO Local Number Online
Businesses can get a local CO number to build trust with local clients. Services like Bling’s virtual phone number platform make setup easy.
VoIP Solutions for Colorado Numbers
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 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.
Use Cases for Colorado 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.
CO Area Code FAQ Section
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 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.
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.