720 area code - Get a Denver, Colorado local phone number

Get a phone number in area code 720 in minutes with OpenPhone, the modern business phone system. You can easily deliver a professional presence and streamline your communication. Call and text from your existing cell phone or even a computer or tablet connected to the internet. It’s simple to communicate with Denver customers in area code 720 wherever you are.

Plans start at just $15 per use per month.

720 phone number
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If you’re looking to expand to this market or grow your business in area code 720, a local business phone number makes you appear local. Your calls are more likely to be answered. Your calls will be instantly recognizable to customers who see your caller ID. Plus, customers are more likely to see you as part of their community.

Area code 720 covers a lot of space, including its major city, Denver, CO, and its 715,522 residents. It touches 12 counties, including Denver, Arapahoe, Jefferson, Adams, Boulder, Douglas, Broomfield, Weld, Elbert, and Clear Creek.

That includes: Denver, Boulder, Longmont, Aurora, Golden, Limon, Centennial; central Colorado. Because of the growing demand for phone numbers, newly activated cell phones, and new residents, 720 has an overlay area code of 303. Both cover the same territory.

There are nearby area codes in the region, like 308 (Grand Island, NE), 505 (Albuquerque, NM), 575 (Las Cruces, NM), 580 (Lawton, OK), 719 (Colorado Springs, CO), and 970 (Fort Collins, CO).

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Use local numbers to help your business succeed.

With a local 720 phone number, you can effectively get in front of the right people and establish a foothold in the Denver, CO area.

Business and industry roundup for
area code 720

What is the business environment like for startups and small businesses in area code 720? After all, newcomers trying to establish a presence in a particular area do well knowing the lay of the land. With so much of the business climate centered on Denver, we gathered a few vital stats to help you understand what work-life is like in area code 720.

Denver residents are likely to work within one of the area’s top industries. According to census.gov, these are the most prominent sectors operating in the metropolis:
  • Educational services, and health care and social assistance
  • Professional, scientific, and management, and administrative and waste management services
  • Finance and insurance, and real estate and rental and leasing

A career in these sectors means you’re in good company. You might even see some of them represented here in the largest employer’s in Denver: Lockheed Martin, Denver Public Schools, Kaiser Permanente, Denver Health, State of Colorado, Children's Hospital Colorado, Comcast, City and County of Denver, Centura Health, Centurylink.

There are plenty of opportunities in these large industries, with existing employers and infrastructure in area code 720. But you can also strike off on your own, fulfilling your customers' needs in less common sectors. That gives customers local options for many more goods and services.

Starting a new business? You won’t be alone. From 2019 to 2020, new business applications in Denver grew 13%. With all those new applications, many new businesses are striving to connect with residents in area code 720. And guess what? They are. The state’s startup survival rate is 76.90%, so many new businesses do well and prosper here.

Even so, the area code’s major city, Denver, experienced a slight increase (0.29%) in population between 2019 and 2020. The area also has a 8.2% unemployment rate. Denver residents who make their homes in the city have a household mean income of $105,901.

Denver also ranked 2 for the most connected cities in America, showing it's a prime place to build a local presence within.

Reach all the residents of Colorado in area code 720 with OpenPhone. Start a free, seven-day trial. You can start calling and texting today and establish a business presence near your biggest customers.

Try out calling and texting with an area code tied to this flourishing region and confirm OpenPhone is a great fit for your business by starting a free seven-day trial of OpenPhone.

calling and texting with OpenPhone

Whether you're looking for a local Denver or North American toll-free number,
getting started is simple.

See which specific 720 phone numbers are available and claim your own Denver, CO number by signing up for a free trial. Here’s how it works: using our service, you can easily set up your local phone number without the need to install any additional hardware. Easily download and install our app, and find the right numbers for your business.

How to get a 720 phone number


Enter your email address or sign in with your Google account.


Then search by city (Denver, CO) or area code (720) to select a specific local number.


Verify your account via credit card (you won’t be charged until your trial ends, cancel anytime.)


Use the OpenPhone browser app or download the desktop apps or mobile apps.

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Why do businesses sign up for a virtual 720 number with OpenPhone
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Get up and running quickly

Activate a new 720 area code phone number in Denver, Colorado, in just a few minutes. Your existing number won’t see any service interruptions, and we do all the work. Get more than one number to use for people, teams, or locations immediately. There are no waiting periods, no stores to navigate, and no hidden fees.

Once you’re here, calling and texting to the US or Canada is free. You can use your local number anywhere, even if you work outside of Denver, CO and the US.

You can use your number on a smartphone or computer since all you need is an internet connection. Manage conversations in your inbox wherever you work using your preferred device; OpenPhone works with your laptop, computer, tablet, and smart phone

Separate what’s work and what’s personal

OpenPhone lets business owners take control over how and where they work while staying local for their customers. Personal numbers remain private and your favorite device is ready to call using your new work phone number.

Stay professional at work, but mute notifications after hours. Your personal calls come through on your personal line, but that doesn’t mean you have to be on-call for business at all hours.

When you sign up for multiple phone numbers using OpenPhone, you’ll always see which calls are coming from your personal line and which are from specific business telephone numbers.

OpenPhone’s modern business phone features give you powerful tools to do more business in area code 720.

Deliver a better customer experience faster

OpenPhone’s modern app gives businesses the features they used to get from a complicated PBX system. You can use phone menus so customers can direct their own calls to team members that can help best. Setting up or updating a phone menu as needed is simple.

And getting your team on board is just as easy. You can activate new numbers instantaneously, assign them to teammates, and even share a main phone number. With shared numbers, your team can:

  • share responsibility for answering calls and messages
  • access go-to message templates that make answering common inquiries a snap
  • collaborate on any communication through internal threads and mentions
  • respond quickly — all voicemails, call history, and texts are in a single view with each contact

To help provide a professional presence with your new number, you can customize your caller ID. Plus, easily set up separate voicemail greetings for when your team is working and off.

Frequently asked questions about local numbers

How do I get a local 720 phone number?
Can you buy a local 720 Colorado phone number?
Can I forward calls from my 720 area code phone number elsewhere?
How many 720 or Colorado phone numbers can I have?
Can I port my existing 720 number to OpenPhone?

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Just a piece of advice. I used my personal cell number as the company number and I still regret it a decade later (I get so many stupid calls). Don’t do what I did. I wish I had a service like this 10 years ago!

Michael Seibel
CEO at Y Combinator

Join thousands of companies using local phone numbers for
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