Overview of the 924 Area Code
What is the 924 area code?
The 924 area code serves Rochester, Minnesota, alongside other established area codes. When you see a 924 number, it indicates a local number within this geographic area.
Why was area code 924 created?
The 924 area code was introduced as an overlay to add numbers in Rochester once the existing area codes 507, 612, 651, 763, and 952 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 924 Area Code
The 924 area code serves Rochester and surrounding areas in Minnesota. It operates within the Central Time (CT) time zone. It complements the coverage of area codes 507, 612, 651, 763, and 952. This area code covers several key cities, including:
- Rochester
- Mankato
- Austin
- Owatonna
- Winona
- Faribault
Got a call from a 924 number? It came from Rochester, MN. Since 924 overlays with 507, 612, 651, 763, and 952, every local call in the region needs all ten digits to land on the right line. Inside 924, Rochester holds about 19% of the population; the rest is split across 260 smaller cities.
Rochester Area Codes Overview
Rochester is served by multiple area codes, reflecting its telecommunications needs. The 924 area code operates alongside 507, 612, 651, 763, 952. Here are the area codes serving this region:
The introduction of the 924 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 924 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Rochester | MN | 123,624 | 0% | 100% |
| Mankato | MN | 46,459 | 0% | 100% |
| Austin | MN | 26,690 | 0% | 100% |
| Owatonna | MN | 26,626 | 0% | 100% |
| Winona | MN | 26,173 | 0% | 100% |
| Faribault | MN | 24,983 | 0% | 100% |
| Northfield | MN | 21,316 | 0% | 100% |
| Albert Lea | MN | 18,159 | 0% | 100% |
| North Mankato | MN | 14,142 | 0% | 100% |
| Marshall | MN | 13,996 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 924 been reported for unwanted calls?
Yes – 1 unwanted-call complaint was reported to the FTC for numbers showing a 924 area code (Jun 29 – Jun 29, 2026).
- 0% robocalls
Most-reported subjects
- Other100%1
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Frequently Asked Questions about the 924 Area Code
Who called me from a 924 number?
A 924 number is assigned to Rochester, Minnesota, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 924 code to look nearby, so a 924 number doesn't prove the caller is local. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 924 code (0% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 924 a scam area code?
No area code is a scam on its own. 924 is a normal, officially assigned code for Rochester, Minnesota. Spam callers spoof local codes to raise the odds you answer, so 924 on your caller ID says nothing about who is really calling. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 924 code (0% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 924 area code?
Repeated calls from different 924 numbers are usually spoofing: a robocaller rotates through 924 numbers so each call looks local and slips past simple blocks. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 924 code (0% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 924 number?
If you aren't expecting a 924 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 924 area code?
Block a single 924 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 924 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 924?
Area code 924 covers Rochester and the surrounding area in Minnesota, spanning 261 cities with about 647,118 residents. It shares its area with overlay codes 507, 612, 651, 763, 952.
Is 924 a real area code?
Yes. 924 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Rochester, Minnesota. A real code can still show up on spoofed spam calls, so treat unknown 924 calls with normal caution.
What timezone is the 924 area code in?
The 924 area code is in the Central Time (CT). Because a number can be kept when someone moves or switches to VoIP, a specific 924 caller may not be in that zone.
How do I call a 924 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 924 and the seven-digit number. From a mobile phone you can usually just enter +1 924 followed by the number and let the phone add the exit code for you.