Colorado
Area Codes
Colorado's economy leans on aerospace, tech, and outdoor recreation, centered around Denver, Colorado Springs, and Aurora. Get a local virtual phone number with any Colorado area code — instant setup, no physical office required.
Why businesses choose a Colorado virtual number
A local Colorado number builds trust before the call connects — and keeps costs at zero.
Higher pickup rates in CO
Colorado residents and businesses are significantly more likely to answer calls from a local area code than out-of-state or toll-free numbers. A local number is the first step to getting the call connected.
Colorado, by the numbers.
Colorado received a single area code, 303, in 1947. It stayed statewide for four decades until 719 split off in 1988, covering Colorado Springs, Pueblo, and the south.
In 1995, 970 split off to cover the northern mountains, western slope, and rural plains, leaving 303 focused on the booming Denver metro.
Rather than split Denver again, regulators overlaid 720 onto 303's territory in 1998 — one of the first overlays in the US, requiring 10-digit dialing.
Colorado's 720, added in 1998, was one of the first overlay area codes in the entire United States — instead of redrawing Denver's map, it simply stacked a second code on the same territory as 303.
Colorado Virtual Phone Numbers
Select any area code to get a local virtual number for that region of Colorado.
The 303 area code covers Denver and the Front Range, Colorado's original numbering plan now sharing territory with the 720 overlay. See coverage, history, and how to get a local number.
The 719 area code covers Colorado Springs, Pueblo & southeastern Colorado. Explore its 1988 split from 303, time zone, scam alerts & how to get a local business number.
The 720 area code covers Denver and the Front Range in Colorado. Learn its history, the 303 and 983 overlays, time zone, and how to get a number for your business.
See which Colorado cities the 970 area code covers, learn the mandatory dialing rules, and find out how the new 748 overlay affects your number starting 2026.
Industries that rely on Colorado virtual numbers
Colorado's business landscape is anchored by aerospace, tech, and outdoor recreation — but local numbers drive better outcomes across every industry.
Real Estate
Agents use local area codes to build trust with buyers and sellers. A local number signals community investment.
Sales Teams
Outbound sales teams with local codes see dramatically higher pickup rates and more productive conversations.
Customer Support
Support teams with local numbers reduce friction for customers who prefer calling a familiar prefix.
Remote & Hybrid Teams
Distributed teams maintain a consistent local brand across all Colorado markets without sharing personal numbers.
Professional Services
Lawyers, accountants, and consultants use local numbers to signal proximity and professionalism.
Small Business
Local businesses use virtual numbers to expand service areas and handle overflow without extra staff.
Get a Colorado number in 3 steps
Active the same day. No hardware, no contracts.
Choose a CO area code
Browse all Colorado area codes and pick the region that best serves your customers. Every Colorado code is available instantly.
Select your number
Choose from available numbers in your selected area code. Vanity and memorable options available upon request.
Go live in under 10 minutes
Configure call routing, business hours, and voicemail from your Rozper dashboard. Your Colorado number is active immediately.
All US area codes by state.
Every state and territory, every active area code. Click a state to browse its codes.
Colorado number questions answered.
Everything you need to know before getting a Colorado virtual phone number.
Get your Colorado number, not tomorrow.
Pick a Colorado area code, choose your number, and start calling immediately. No hardware, no contracts, no waiting.