612 area code
Area code 612 is in Minnesota. Most of its numbers are issued in the rate centre NANPA calls TWINCITIES. Local time there is , Central Time. In service since 1947, with no overlay.
- State
- Minnesota
- Time zone
- Central
- Overlays
- none
- In service since
- 1947
- Rate centres
- 2
- Prefixes assigned
- 590 (5,900,000 numbers)
Who calls from a 612 number
NANPA records the carrier each block of 612 numbers is assigned to. Of the 5.9 million 612 numbers assigned, 46% are with mobile carriers (T-Mobile, Verizon Wireless and AT&T Mobility); 26% with cable, internet-calling, business and other carriers (Onvoy and Bandwidth); 23% with local phone companies (Qwest (CenturyLink)); 5% with paging companies.
That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.
| Carrier | Kind | Share |
|---|---|---|
| Qwest (CenturyLink) | Landline | 23% |
| T-Mobile | Mobile | 17% |
| Verizon Wireless | Mobile | 15% |
| AT&T Mobility | Mobile | 13% |
| Onvoy | Cable, VoIP, other | 7% |
| Bandwidth | Cable, VoIP, other | 6% |
An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.
Places in area code 612
The 1 place with a telephone rate centre of its own using 612, largest first. Each links to its ZIP codes.
| Place | ZIP codes | Population |
|---|---|---|
| Cambridge, MN | 1 | 10,307 |
Nearby places using 612
These places have no rate centre of their own in NANPA's records; the nearest one uses 612. Near an area-code boundary that can be wrong for part of a town.
ZIP codes in area code 612
3 ZIP codes in 3 towns, by the town each is mailed to, largest first. Each links to its own page.
Where 612 numbers are issued
NANPA's rate centres with the most 612 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.
| Rate centre | Place | Prefixes |
|---|---|---|
TWINCITIES | — | 588 |
CAMBRIDGE | Cambridge | 2 |
Counties
The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.
Which code covers where you are now? What area code am I in? answers from your location.
Questions about area code 612
Where is area code 612?
Area code 612 is in Minnesota. Most of its numbers are issued in the rate centre NANPA calls TWINCITIES.
What ZIP codes are in area code 612?
3 ZIP codes, by the town each is mailed to: Cambridge (55008), St. Francis (55070), Isanti (55040). The full list is on this page.
What time zone is area code 612 in?
Central time.
Is a 612 number a mobile or a landline?
It can be either. 46% of 612 numbers are assigned to mobile carriers and 23% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.
Does a 612 number mean the caller is in Minnesota?
Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 612 call can come from anywhere.
Other area codes in Minnesota
All 8 Minnesota area codes, by area, with the cities each covers
Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.
Cite this page
zipcodes.pro. “Area code 612.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/612
Underlying data is public domain or openly licensed — sources, vintages and licences.