Minnesota · Central Time
320 Area Code
Area code 320 is in Minnesota, serving central and west-central Minnesota around St. Cloud, Willmar and Alexandria. It is in the Central Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 320 area code?
320 is a Minnesota area code covering central and west-central Minnesota around St. Cloud, Willmar and Alexandria. In the wider directory it sits in the Midwest region.
Cities in the 320 area code
- St. Cloud
- Willmar
- Alexandria
- Sartell
- Sauk Rapids
- Hutchinson
- Little Falls
- Litchfield
- Morris
- Montevideo
- Milaca
Counties served by 320
Stearns County, Benton County, Kandiyohi County, Douglas County, Morrison County, McLeod County, Meeker County, Pope County, Stevens County and Mille Lacs County.
Dialing 320
St. Cloud, MN is currently served by the single area code 320, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 320 followed by the seven-digit number.
History of the 320 area code
320 went into service on March 17, 1996, created when it was split from 612. It serves St. Cloud and the surrounding part of Minnesota. For how codes are created, split, and overlaid, see how area codes work.
Is 320 a scam or spam risk?
320 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 320 number on your screen is no guarantee the caller is in St. Cloud, MN or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Minnesota area codes
Explore more
See every code in Minnesota, compare codes across the Midwest region, or view all Central Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
320 area code FAQ
Where is the 320 area code?
The 320 area code is in Minnesota, covering central and west-central Minnesota around St. Cloud, Willmar and Alexandria, in the Midwest region.
What cities are in the 320 area code?
Cities in the 320 area code include St. Cloud, Willmar, Alexandria, Sartell, Sauk Rapids, Hutchinson, Little Falls, Litchfield, Morris and Montevideo.
What time zone is 320 in?
320 is in the Central Time zone.
When did the 320 area code start?
320 went into service on March 17, 1996.
Do I have to dial 10 digits for 320?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 320 a toll-free or premium code?
No. 320 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.