The 320 area code covers Saint Cloud, Willmar and 129 more places in Minnesota.
Area code 320 is in Minnesota, on Central Time. In the 320 area, phone numbers are given out most in Stearns County, then Kandiyohi and McLeod counties. It has been in service since March 17, 1996.
- Where
- 8 counties in Minnesota, mostly Stearns County, Kandiyohi County and McLeod County
- Time zone
- Central Time
- In service since
- March 17, 1996
- Shares its area with
- No other area code
- Prefixes in use
- 511
- How to dial
- Local calls inside 320 can still be dialed with just 7 digits.
Find out who called you from a 320 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (320) number is on today, use our free carrier lookup.
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Saint Cloud holds 17% of the phone prefixes in area code 320.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 511 prefixes in use shows where 320 numbers are actually given out.
- Saint Cloud86 prefixes, 17%
- Willmar18 prefixes, 4%
- Alexandria18 prefixes, 4%
- Little Falls13 prefixes, 3%
- Hutchinson11 prefixes, 2%
- Pine City10 prefixes, 2%
- Litchfield9 prefixes, 2%
- Braham8 prefixes, 2%
Also served: Morris, Mora, Ogilvie and Rush City and 119 smaller places.
Of the carriers named here, Qwest (Lumen) holds the most phone number prefixes in area code 320: 42 of 511.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 511 prefixes in use in 320 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Qwest (Lumen)Lumen's landline company | 42 | 8% |
| CenturyLinkLandline company | 32 | 6% |
| FrontierLandline company | 30 | 6% |
| AT&T MobilityMobile network | 28 | 5% |
| Level 3 (Lumen)Lumen's business and wholesale network | 23 | 5% |
| MediacomCable company's phone service | 22 | 4% |
| 61 other carriers | 334 | 65% |
72% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
320 has covered the same ground since 1996.
1996
320 starts on March 17, 1996, split off from 612.
A 320 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 320 are 763, 952 and 612.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
These are the questions people ask most about area code 320.
Where is area code 320?
320 covers Saint Cloud, Willmar, Alexandria and Little Falls and 127 more places in Minnesota. In the 320 area, phone numbers are given out most in Stearns County, then Kandiyohi and McLeod counties.
What state is area code 320 in?
Minnesota. 320 is a Minnesota area code on Central Time.
What cities use area code 320?
The places holding the most 320 prefixes are Saint Cloud, Willmar, Alexandria, Little Falls, Hutchinson, Pine City, Litchfield and Braham, out of 131 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 320?
No single phone company owns 320. NANPA's records list its 511 prefixes across many carriers, and the ones named on this page include Qwest (Lumen), CenturyLink and Frontier. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 320 in?
320 is on Central Time.
When did area code 320 start?
320 went into service on March 17, 1996, when it was split off from 612.
How do I dial a 320 number?
Local calls inside 320 can still be dialed with just 7 digits.
Is 320 a toll-free number?
No. 320 is a regular area code for Saint Cloud and Willmar in Minnesota, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 320?
The closest are 763 (Minneapolis-Saint Paul, Minnesota), 952 (Minneapolis-Saint Paul, Minnesota), 612 (Minneapolis-Saint Paul, Minnesota) and 651 (Minneapolis-Saint Paul, Minnesota), measured between the centres of each area.
Who called me from a 320 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 320 a scam?
320 is a real Minnesota area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.