Go local across Colorado today.
Colorado's tech corridor runs from Fort Collins through Denver to Colorado Springs — and it's growing fast. Pick from four area codes, activate in under 60 seconds, and take calls across the Mountain West on any device. No hardware. No contracts. Mountain Time routing built in from day one.
Free 14-day trial — no credit card Number live in under 60 seconds MT routing built in
Colorado · Live CoverageChoose a city — number updates liveLiveYour new number
(303) 555‑0142
0.3s
Pickup
MT
UTC−7
20+
Caratteristiche
Number provisionedLive in 0.4s · no hardware
JDIncoming · Jess D.(303) 555-0241 · Denver
Colorado area codes · CO coverage
Colorado's 4 area codes — covering the Front Range and beyond.
Colorado uses four area codes anchored to its distinct regions. The 303 and its overlay 720 serve Denver and the surrounding metro. The 719 covers Southern Colorado, including Colorado Springs and Pueblo. The 970 spans the northern cities of Fort Collins and Loveland, and stretches west across the mountains to Grand Junction. A local CO number on Ringflow connects your business directly to the markets driving Colorado's economy.
StateColorado (CO)
RegioneMountain West
CapitaleDenver
Largest cityDenver
Fuso orarioMT · UTC−7
Population~5.8M
Major marketsDenver · Colorado Springs · Aurora · Fort Collins · Boulder
Area codes4
Live coverage · All 4 Colorado area codes
4 area codes. Front Range to the Western Slope.
From Denver's startup scene to Boulder's research corridor, from Colorado Springs' defense and aerospace market to Fort Collins' university hub, Ringflow covers all four active Colorado area codes. Pick your code and activate the same day — Mountain Time routing included.
All 4 CO area codes — instant activation Mountain Time (MT / UTC−7) routing built in
Colorado · Live coverageOnline
4 area codes active Live availability — real time
All area codes · Colorado (CO)
4 Colorado area codes. Pick your market. 4 active
Every active Colorado area code is on Ringflow. Denver metro, Southern Colorado, the Front Range, or the Western Slope — find the code that puts you closest to your customers.
303
303 · Denver metro
Denver · Boulder · Lakewood · Englewood · LittletonColorado · CO719
719 · Southern Colorado
Colorado Springs · Pueblo · Canon City · Fountain · TrinidadColorado · CO720
720 · Denver metro (overlay)
Denver · Aurora · Westminster · Thornton · ArvadaColorado · CO970
970 · Northern & Western CO
Fort Collins · Grand Junction · Loveland · Greeley · DurangoColorado · COBuilt-in features · Every Colorado number
Every feature on every Colorado number. No extras.
Every Ringflow CO number ships with call forwarding, two-way SMS, IVR, voicemail transcription, and live analytics — all Mountain Time aware. One plan, all features, no bolt-ons.
Connect & converse — wherever your team works.
Call forwarding — mobile, desk phone or laptop
Voicemail-to-email — AI transcripts in your inbox
Two-way SMS / MMS — text from your 303 number
Local caller ID — show CO on every outbound call
Setup guide · Under five minutes
Get your Colorado number in four steps.
No carrier paperwork. No IT team. Pick a CO area code, choose a plan, configure your routing, and your Colorado number is live — ready to represent your business on the Front Range and beyond.
01
Step one
Choose your area code
Targeting Denver metro? Go with 303 or 720. Colorado Springs or Pueblo? Pick 719. Fort Collins, Boulder, or the Western Slope? That's 970.
- Filter by city or prefix
- Port your existing CO number for free
- Ringflow team available to advise
02
Step two
Select a plan
Starter, Professional, or Enterprise — every plan includes the full feature set. Monthly or annual billing, with no setup fees on any tier.
- No setup fees on any plan
- All features included from day one
- Scale seats up or down anytime
03
Step three
Configure routing
Build your call flows, business hours, IVR menus, and voicemail with the drag-and-drop builder. Everything schedules on Mountain Time (MT / UTC−7) automatically.
- Visual IVR builder — no code required
- MT (UTC−7) scheduling built in
- Forward to mobile, browser, or desk phone
04
Step four
Go live
Your Colorado number is active the moment setup is done. Customers dial a familiar CO area code. Your team answers from any device. Analytics start from call one.
- Funziona su app mobile, browser o telefono fisso
- Analisi e registrazioni dal vivo dal primo giorno
- Supporto Ringflow 24 ore su 24, 7 giorni su 7
Directory di copertura · Sfoglia per stato
Sfoglia i prefissi per stato.
Scegli una regione, quindi seleziona uno stato qualsiasi per visualizzare ogni prefisso attivo con copertura della città, fusi orari e una scorciatoia per la selezione del numero.
Expanding into more states? See Connecticut area codes
FAQ · Colorado virtual numbers
Common questions about Colorado virtual phone numbers.
Quick answers on area codes, Mountain Time routing, activation speed, and porting your existing CO number.
Colorado has four active area codes: 303 (Denver metro and Boulder), 719 (Southern Colorado — Colorado Springs, Pueblo), 720 (Denver metro overlay), and 970 (Northern and Western Colorado — Fort Collins, Grand Junction, Loveland). All four are available on Ringflow.
303 is Denver's original code and the most recognized in the metro area. 720 is its overlay — both serve the same Denver metro geography. Either will signal strong local presence in Denver. If you're specifically targeting Boulder, 303 has the strongest association.
Yes. Ringflow virtual numbers give you genuine local CO presence — any of the four area codes — without a physical location or carrier contract. Calls route to any device, anywhere.
Under 60 seconds. Select your area code, confirm your plan, and the number is live and ready to take calls and texts before you leave the signup page.
Yes, and it's free. Porting an existing CO number typically completes in 3 to 7 business days with no service interruption. You keep your number and get all of Ringflow's features.
Built in. Business-hours routing, time-of-day call flows, and all analytics run on MT (UTC−7). If your team operates remotely from a different time zone, Ringflow handles the conversion automatically.
Front Range to Western Slope. Your CO number reaches every mile.
MT routing built in · All 4 CO codes available · Free number porting · No long-term contracts