QUEBEC · AREA CODE GUIDE
579 area code location: Granby and St-Jerome, Quebec
- Local date and time
- Eastern Time
Map data: HSIP (2010) · NANPA · Statistics Canada (Open Government Licence – Canada) · US Census Bureau, checked 26 September 2026. Boundaries are approximate.
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Download the 579 area code map
A printable area code 579 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
579 area code at a glance
- Province
- Quebec
- Primary cities
- Granby, Joliette, and St-Jerome
- Established
- Prefixes in service
- 644 as of 26 September 2026
An area code does not show where a caller is now.
History
Country and calling code: Canada (+1).
Parent code: 450.
New code planned: No, as of 22 September 2026.
Time zone
- Eastern Time
- Standard time UTC−05:00
- Daylight saving time UTC−04:00
Communities covered
579 numbers are issued across 126 communities. These are telephone exchange areas, which follow the phone network rather than city limits, so a place can sit just outside the boundary of the town it is named for.
- Granby
- Joliette
- St-Jerome
- St-Hyacinthe
- Ste-Therese
- Longueuil
- Chomedey
- Sorel
- St-Jean
- Laval-Est
- Laval-Ouest
- Pont-Viau
- St-Eustache
- Valleyfield
- Lanoraie
- Ste-Rose
- L'Epiphanie-l'Assomption
- Lachute
- Eastman
- Knowlton
- Mansonville
- Marieville
- St-Lambert
- Sutton
- Berthierville
101 more communities
- Chateauguay
- Frelighsburg
- St-Lin
- St-Vincent-de-Paul
- Waterloo
- Bedford
- Boucherville
- Cowansville
- St-Hippolyte
- St-Sauveur
- Terrebonne
- Beloeil
- Bromont
- Chambly
- Dunham
- Franklin Centre
- Lacolle
- Laprairie
- Le Gardeur
- Mirabel-Aeroport
- Rawdon
- St-Alphonse-de-Rodriguez
- St-Barthelemy
- St-Bruno
- St-Cesaire
- St-Gabriel-de-Brandon
- St-Jean-de-Matha
- St-Marc
- Vercheres
- Actonvale
- Contrecoeur
- Henryville
- Mirabel-St-Augustin
- Napierville
- Ormstown
- Pierreville
- St-Blaise
- St-Calixte-de-Kilkenny
- St-Constant
- St-Denis
- St-Felix-de-Valois
- St-Michel-des-Saints
- St-Paul-D'Abbotsford
- St-Pie
- St-Zenon
- Ste-Julie-de-Vercheres
- Ste-Julienne
- Vaudreuil
- Yamaska
- Coteau-Landing
- Crabtree
- Farnham
- Hemmingford
- Huntingdon
- Lavaltrie
- Mascouche
- Oka
- Riviere-Beaudette
- St-Damase
- St-Jacques
- St-Ours
- St-Pie-de-Guire
- St-Remi
- St-Zephirin
- Ste-Anne-des-Plaines
- Ste-Justine-de-Newton
- Ste-Madeleine
- Ste-Martine
- Ste-Victoire
- Varennes
- Beauharnois
- Clarenceville
- Howick
- Les Cedres
- Mirabel-Ste-Scholastique
- Notre-Dame-de-Stanbridge
- Rigaud
- St-Aime
- St-Chrysostome
- St-Clet
- St-Hugues
- St-Jude
- St-Polycarpe
- St-Simon
- St-Thomas-d'Aquin
- Ste-Adele
- Ste-Helene-de-Bagot
- Ste-Marguerite
- Ste-Marthe
- Valcourt
- Venise-en-Quebec
- Brownsburg
- Coteau-du-Lac
- Hudson
- Morin Heights
- Roxton Falls
- Saint-Liboire
- St-Andre Est
- Ste-Rosalie
- Ste-Sabine
- Upton
Notable places in 579
| Place | Where | What it is |
|---|---|---|
| Montréal–Mirabel International Airport | 10.4 km from St-Jerome | Airport |
| Montreal Metropolitan Airport | 1.2 km from Longueuil | Airport |
| Roland-Désourdy Airport | 8.1 km from Bromont | Airport |
| Fort Chambly | 1.2 km from Chambly | Fortification |
| Canadian Railway Museum | 0.6 km from St-Constant | Museum |
| Granby Zoo | 2.1 km from Granby | Zoo |
| Fort Richelieu | 6.2 km from Berthierville | Fortification |
| Centre Marcel Dionne | 23.8 km from St-Pie-de-Guire | Arena |
| Cégep Édouard-Montpetit | 5.4 km from Longueuil | College |
| Cégep de Saint-Hyacinthe | 2.4 km from St-Hyacinthe | College |
Area code 354 has its own page.
Area code 450 has its own page.
Area code 579
579 started service on .It came from 450.
It covers part of the 450 area: its numbers are not issued in 3 of 450's communities.
No new code is planned for the region as of .
Questions about 579
Where is the 579 area code?
579 is in Quebec. Its numbers are issued in Granby, Joliette, St-Jerome, and 123 other communities.
What time zone is area code 579 in?
579 is in Eastern Time. Daylight saving time is observed.
Is 579 an overlay?
Yes. 579 was added as an overlay on 450 on 21 August 2010.
What communities are in the 579 area code?
Granby, Joliette, St-Jerome, St-Hyacinthe, and Ste-Therese, and 121 other communities.
What province is area code 579 in?
Area code 579 is in Quebec.
Is 579 a toll-free area code?
No. 579 is a geographic area code. The toll-free codes are 800, 833, 844, 855, 866, 877, and 888.
Sources: NANPA area code listing, CNA code status. Checked .
Business phone numbers in area code 579, answered by an AI agent
A local number for Granby, Joliette, and St-Jerome, Quebec, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.