579 area code
Area code 579 is in Quebec, Canada, including Longueuil, Saint-Hyacinthe, Saint-Jean-sur-Richelieu and Saint-Jérôme. It's on Eastern Time.
579 is an overlay area code: it was added on top of 450 and covers the same area, so new numbers there can get either code.
Eastern Time
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Business hours are taken as 9 AM to 5 PM on weekdays. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
Cities in area code 579
| City | Time zone |
|---|---|
| Longueuil, QC | Eastern Time |
| Saint-Hyacinthe, QC | Eastern Time |
| Saint-Jean-sur-Richelieu, QC | Eastern Time |
| Saint-Jérôme, QC | Eastern Time |
| Granby, QC | Eastern Time |
| Repentigny, QC | Eastern Time |
| Terrebonne, QC | Eastern Time |
| Saint-Eustache, QC | Eastern Time |
| Laval, QC | Eastern Time |
| Saint-Hubert, QC | Eastern Time |
| Vaudreuil-Dorion, QC | Eastern Time |
| Salaberry-de-Valleyfield, QC | Eastern Time |
Other area codes in Quebec
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 579?
Area code 579 is in Quebec, Canada, including Longueuil, Saint-Hyacinthe, Saint-Jean-sur-Richelieu and Saint-Jérôme.
What time zone is area code 579?
579 is on Eastern Time (UTC−5, UTC−4 in summer).
What time is it in area code 579 right now?
The live clock at the top of this page shows the current local time in area code 579.