Area codes in Greeley, Colorado
Greeley, Colorado uses 2 area codes — 970 and 748. The main Greeley area code is 970.
Area codes serving Greeley
Phone numbers in Greeley are written as ten digits — for example (970) 555-0190 — and fall in the Mountain Time zone.
How Greeley came to have 2 area codes
The original Greeley area code is 970, in service since 1995. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 748 (2025). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Greeley now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
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Frequently asked questions
What is the area code for Greeley?
The main area code for Greeley, Colorado is 970. Greeley is now served by 2 area codes in total: 970, 748.
How many area codes does Greeley have?
Greeley has 2 area codes: 970, 748.
Why does Greeley have more than one area code?
As Greeley used up the numbers available in its original area code (970, in service since 1995), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Greeley number?
Dial all 10 digits — the area code (970 or 748) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.