Area Code 579
Area code 579 covers Granby and nearby cities including Joliette, Saint-Jérôme, Saint-Hyacinthe in Quebec, in the Eastern Time.
Area code 579 quick facts
| Location | Granby, Quebec |
|---|---|
| Time zone | Eastern Time |
| In service | 2010-08-21 |
| Overlay codes | 354, 450 |
| Nearby codes | 354, 450, 514, 263, 438, 468 |
| Carrier coverage | 644 prefixes; 7% wireless |
| Data current as of | August 2, 2026 |
Is a call from 579 a scam? Who called me from 579?
Cities in area code 579
Granby, Joliette, Saint-Jérôme, Saint-Hyacinthe, Sainte-Thérèse, Longueuil, Saint-Jean, Chomedey, Sorel, Laval-Est, Laval-Ouest, Pont-Viau
Carriers in area code 579
Area code 579 spans 644 prefixes, about 7% wireless. Top carriers: TELUS COMMUNICATIONS (QUEBEC) INC. - QC, FIBERNETICS CORPORATION, VIDEOTRON LTD., IRISTEL INC. - ON. Look up the carrier and line type for a 579 number.
Other Quebec area codes
- 263 — Montréal
- 273 — Alma
- 354 — Valleyfield
- 367 — Québec
- 418 — Québec
- 438 — Montréal
- 450 — Granby
- 468 — Sherbrooke
- 514 — Montréal
- 581 — Québec
- 819 — Hull
- 873 — Sherbrooke
Nearby area codes
Frequently asked questions
Where is area code 579?
Area code 579 covers Granby and nearby cities including Joliette, Saint-Jérôme, Saint-Hyacinthe in Quebec, in the Eastern Time.
What cities use area code 579?
Area code 579 serves Granby, Joliette, Saint-Jérôme, Saint-Hyacinthe, Sainte-Thérèse, and 7 other communities in Quebec.
What time zone is area code 579 in?
Area code 579 is in the Eastern Time (America/Toronto).
How do you dial a 579 number?
Dial all 10 digits: 579 followed by the 7-digit local number. From abroad, dial +1 579 and the local number.
Is a call from area code 579 a scam?
A 579 number is geographically tied to Quebec, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.
Is 579 a country code?
No. 579 is a Canadian area code (a domestic 3-digit code), not a country code. The country (calling) code for Canada is +1, shared across the North American Numbering Plan. So a full 579 number written for international dialing looks like +1 579 followed by the 7-digit local number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.