St. Cloud, the largest city in central Minnesota and the hub of the state’s “Granite Country,” is served by area code 320. Whether you’re calling a St. Cloud number, moving to the region, or checking an unfamiliar caller, this guide covers the area codes that serve the city, local dialing rules, the ZIP codes involved, and the scam calls residents most often report.
St. Cloud Area Codes at a Glance
| Detail | Information |
|---|---|
| Primary Area Code | 320 |
| Overlay Codes | None currently active |
| Time Zone | Central Time (CST/CDT, UTC−6 / UTC−5) |
| Major Counties | Stearns, Benton & Sherburne |
| State | Minnesota |
Area Code Breakdown & Neighborhood Mapping
Area code 320 is the regional code for central Minnesota, and St. Cloud is its largest city. The code was created when the state’s original numbering was split, taking over the central tier of Minnesota between the Twin Cities metro and the northern and southern regions.
St. Cloud & the Tri-County Area
St. Cloud spans three counties, and 320 covers all of them: the Stearns County side west of the Mississippi, the Benton County side to the east including Sauk Rapids, and the Sherburne County suburbs to the southeast such as St. Augusta and the edge of the Sartell–Sauk Rapids corridor. St. Cloud State University and the downtown core all fall under 320.
Greater Central Minnesota vs. the Metro
320 also serves nearby communities including Sartell, Sauk Rapids, Waite Park, Willmar, Alexandria, and Litchfield. To the southeast, the Twin Cities metro uses 612 (Minneapolis), 651 (Saint Paul), 763, and 952. To the north, Minnesota uses 218 (Duluth), and the south uses 507 (Rochester).
Local Dialing Rules & International Calling
Minnesota requires 10-digit dialing statewide. Always dial 320 plus the seven-digit number, even for local calls within St. Cloud. For domestic long distance, add a leading 1 (1 + 320 + number). To reach St. Cloud from another country, dial your exit code, then the U.S. country code +1, then 320 and the local number. Mobile users can enter +1 320 directly.
Major ZIP Codes in St. Cloud
St. Cloud ZIP codes fall mainly in the 56301, 56303, and 56304 range. 56301 covers the southern and central city including the university area, 56303 covers the north and northwest, and 56304 covers the east side across the river. Adjacent 56377 (Sartell) and 56379 (Sauk Rapids) are used in the neighboring suburbs, and administrative ranges extend into the 56390s.
Cell Phones & Number Portability
Because of federal number portability, a 320 number no longer guarantees the caller is currently in St. Cloud or central Minnesota. Students and workers often keep numbers from other regions, and residents who move away hold onto their 320 mobile lines. New local service is usually assigned a 320 number, but the dependable habit is to dial all ten digits for every call and to evaluate callers by who they are rather than the area code shown.
Spam & Scam Call Warnings in St. Cloud
St. Cloud residents report the same robocall patterns seen across greater Minnesota:
- Neighbor spoofing: Scam calls faking a 320 prefix to look local. Screen unfamiliar numbers even when the area code matches.
- Utility shutoff threats: Callers posing as Xcel Energy or a local co-op demanding immediate gift-card or wire payment.
- Government impersonation: Fake IRS, Social Security, or Stearns County “warrant” calls pressuring you to pay to avoid arrest.
- Student and financial-aid scams: With St. Cloud State nearby, watch for fake tuition, scholarship, or loan-forgiveness robocalls seeking personal information.
Let unknown calls go to voicemail, never share financial information with an inbound caller, and report unwanted calls to the FTC at reportfraud.ftc.gov.
Frequently Asked Questions
What area code does St. Cloud use?
St. Cloud uses area code 320, the regional code for central Minnesota.
Does St. Cloud have more than one area code?
No. 320 has never been split or overlaid, so it is the only area code serving St. Cloud and the surrounding tri-county area.
Do I need to dial the area code for local calls?
Yes. Minnesota uses mandatory 10-digit dialing, so include 320 even within St. Cloud.
What time zone is St. Cloud in?
St. Cloud observes Central Time (CST in winter, CDT in summer).
How do I call St. Cloud from abroad?
Dial your country’s exit code, then +1, then 320 and the seven-digit local number.
Stay Safe & Explore More
- Verify an unknown caller in our Scam Alerts directory.
- Comparing nationwide numbers? See our Toll-Free Numbers guides.