507 area code — Rochester, MN geographic
If a call shows area code 507, the number was issued in the Rochester area — a code active since 1954, on Central time. The same territory is also served by its overlay code (507/924 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 762 working prefixes, held by 92 different carriers. Of these, 549 are pooled prefixes shared by multiple carriers. Numbers are anchored to 228 rate centers — billing localities that fix where each prefix belongs.
Local calls inside 507 are dialed 10D; 1+10 digit dialing permissible at service providers discretion.
As demand grew it in turn gave rise to 924 (2024).
If a 507 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
Largest localities in 507
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Rochester | 81 | — |
| Mankato | 46 | — |
| Winona | 22 | — |
| Faribault | 21 | — |
| Owatonna | 20 | — |
| Austin | 17 | — |
| Marshall | 15 | — |
| Northfield | 14 | — |
| Albert Lea | 14 | — |
| New Ulm | 11 | — |
FAQ
Why am I getting spam calls from 507 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 507 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 507 number from?
507 is assigned to Rochester and surrounding areas of Minnesota in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 507 a toll-free number?
No. 507 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 924 and 507 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 507/924 complex shares one service area, and local calls are dialed with 10 digits.