970 area code — Fort Collins, CO geographic
Phone numbers beginning 970 are registered to the Fort Collins area of Colorado (Mountain time zone). The code entered service on April 2, 1995. The same territory is also served by its overlay code (748/970 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 769 working prefixes, held by 60 different carriers. Of these, 520 are pooled prefixes shared by multiple carriers. Numbers are anchored to 120 rate centers — billing localities that fix where each prefix belongs.
If a 970 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
The code was carved out of 303 (1995). As demand grew it in turn gave rise to 748 (2025).
The current NANPA exhaust forecast for the 748/970 complex is 4Q 2088.
Local calls inside 970 are dialed 10D; 1+10 digit permissible at service provider discretion..
Among Colorado codes, 970 stands out as covers more rate centers (120) than any other Colorado area code.
Largest localities in 970
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Fort Collins | 95 | — |
| Greeley | 61 | — |
| Grand Junction | 57 | — |
| Loveland | 35 | — |
| Durango | 29 | — |
| Vail | 24 | — |
| Glenwood Springs | 21 | — |
| Montrose | 19 | — |
| Aspen | 17 | — |
| Dillon | 17 | — |
FAQ
Will 970 run out of numbers?
NANPA's current forecast projects exhaust in 4Q 2088 — decades of capacity remain.
Why am I getting spam calls from 970 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 970 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 970 number from?
970 is assigned to Fort Collins and surrounding areas of Colorado in the Mountain time zone. The three digits after the area code (the prefix) narrow it down to a rate center.