Looking for the area code for Greeley, Colorado? Greeley is served by area code 970, which covers the northern and western portions of the state. This guide breaks down exactly which code covers Greeley and its neighborhoods, how to dial locally and internationally, the ZIP codes involved, and how to protect yourself from scam calls.
Greeley Area Codes: Fast Facts
| Detail | Information |
|---|---|
| Primary Area Code | 970 |
| Overlay Area Code | None (970 serves the region) |
| Time Zone | Mountain Time (MST / MDT) |
| Major County | Weld County |
| Region | Northern Colorado / Front Range |
| Country Code | +1 (USA) |
Area Code Breakdown & District Mapping
Greeley sits on the northern Front Range east of Fort Collins, serving as the seat of Weld County and home to the University of Northern Colorado. It is one of the largest cities in the 970 region:
- Area code 970 — covers northern and western Colorado, including all of Weld County. In Greeley this spans Downtown, the University of Northern Colorado (UNC) area, west Greeley, and neighboring communities such as Evans, Windsor, and Eaton.
Area code 970 was created in 1995, split from 303 to serve northern, western, and eastern Colorado — a large region that also includes Fort Collins, Grand Junction, and the mountain resort towns. As one of the fastest-growing counties in the state, Weld County’s landlines and businesses in Greeley all carry the 970 code.
Because 970 is a single geographic code rather than an overlay, there is no second local code to remember in Greeley — every local number uses the 970 prefix, shared with communities across northern Colorado.
Local Dialing Rules & International Calling
Ten-digit dialing is the standard across Colorado, so always include the area code — even for a call within Greeley.
- Local / domestic: dial 970-XXX-XXXX.
- 11-digit: you can also dial 1-970-XXX-XXXX; the leading 1 is the country code for the US.
- International: dial your country’s exit code, then +1 970 XXX XXXX — for example, 00 1 970 XXX XXXX from the UK or Europe, or +1 970 XXX XXXX from any mobile phone.
Major ZIP Codes Covered
Greeley’s 970 numbers align with ZIP codes including 80631 (central/east Greeley and UNC), 80634 (west Greeley), and 80638, along with nearby Weld County communities such as Evans (80620) and Windsor (80550).
Spam & Scam Call Warnings for Greeley
Scammers often spoof local 970 numbers so their calls appear to come from a neighbor or a nearby business. Greeley residents commonly report:
| Scam type | What to watch for |
|---|---|
| Government impersonation | Fake IRS or Social Security calls demanding payment |
| Student & tuition scams | Calls about “unpaid tuition” targeting UNC students |
| Utility impersonation | Threats to shut off power unless you pay immediately |
| Agricultural & employment scams | Fake job offers requesting fees or personal information |
To stay safe: never share personal or financial details with an unexpected caller, block suspicious numbers, and verify unfamiliar callers with a reverse phone lookup before calling back. If a call feels urgent or threatening, hang up and call back on an official number. Report unwanted calls to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby Colorado Cities
Explore area codes for other Northern Front Range cities, such as Fort Collins, or for the state capital, Denver. See more on our Colorado hub or browse all US city area-code guides.
Frequently Asked Questions
What is the area code for Greeley?
The area code for Greeley is 970, which covers the city and the wider northern and western Colorado region.
Does Greeley use 303?
No. While 303 serves the Denver metro, Greeley uses 970, the same northern Colorado code as Fort Collins.
What time zone is Greeley in?
Greeley is in the Mountain Time Zone (MST/MDT) and observes Daylight Saving Time.
Do I have to dial the area code in Greeley?
Yes — dialing all 10 digits (970 + number) is the standard and works for every call.
Which county is Greeley in?
Greeley is the county seat of Weld County, which is served by the 970 area code.
Stay Safe & Explore More
- Verify an unknown caller in our Scam Alerts directory.
- Comparing nationwide numbers? See our Toll-Free Numbers guides.