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US area code · Colorado

970 area code

Where the 970 area code is, its overlay and how to dial a +1 970 number from anywhere.

CoversFort Collins, ColoradoTime zoneMountain (MT)TypeOverlay
Quick answer

The 970 area code is in Fort Collins, Colorado, United States (Mountain (MT)). To call from abroad: +1 970 555-0123. It is an overlay, so all 10 digits are dialled.

StateColorado
Main areaFort Collins
Time zoneMountain (MT)
TypeOverlay
10-digit dialingRequired
In service since21-Sep-1994

The 970 area code is a geographic North American Numbering Plan (NANP) code covering Fort Collins, Colorado. It has been in service since 21-Sep-1994 and sits in the Mountain (MT) time zone.

Overlay 970 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

970303748

How to dial a 970 number

From abroad+1 970 555-0123
Within the US / Canada1 970 555-0123
Locally (same area)970 555-0123

Cities in the 970 area code

A 970 number is usually in one of these places in Colorado — 3 counties.

Fort Collins LarimerGrand Junction MesaGreeley WeldLoveland Larimer

Other Colorado area codes

303719720748983

Frequently asked questions

Where is the 970 area code?

The 970 area code is in Fort Collins, Colorado, United States (Mountain (MT)).

Is 970 an overlay area code?

Yes. 970 overlays the same region as 303, 748, so callers dial all 10 digits.

Do I have to dial 10 digits for 970?

Yes — dial the area code plus the seven-digit number.

How do I call a 970 number from another country?

Dial your exit code (or +), then 1, then 970, then the number: +1 970 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 970 number does not pinpoint a street or ZIP code.

Number holders in area code 970

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 789 prefixes are in use in 970, shared by 63 companies. The largest holders:

CompanyPrefixesShare
Qwest Corporation18924%
Onvoy, LLC8811%
Cellco Partnership Dba Verizon Wireless7710%
T-Mobile USA, Inc.709%
New Cingular Wireless PCS, LLC547%
Level 3 Communications, LLC476%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 970 numbers

Reports to the FTC, last 30 days
819
Recorded messages or robocalls
74%
Rank among area codes
#73 of 670
Most reported subjects
Reducing your debt (credit cards, mortgage, student loans) (309)
Other (270)
Dropped call or no message (95)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 970 — cities & rate centres

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