About Area Code 354
- Region Code
- 354
- City
- Laval
- State
- Quebec
- Largest City
- Laval
- Time Zone
- Eastern Time

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Area Code 354 — Laval, Quebec
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Few numbering plan areas in North America have a shape as distinctive as the one now served in part by area code 354. It belongs to the 450/579/354 overlay complex, which completely surrounds area code 514 on the Island of Montreal, a "doughnut" arrangement that is unique in Canada. That complex traces back to 1998, when area code 450 was split from 514 to serve Montreal's off-island suburbs and the Montérégie region.
NANPA formally assigned 354 in 2019 as a further overlay to relieve exhaustion in the 450 numbering pool, and it went into service on October 22, 2022. Laval, the region's largest city, serves as the primary hub, with the territory also reaching Longueuil, Terrebonne, Saint-Jean-sur-Richelieu, Brossard, and Saint-Hyacinthe.
This ring of suburban and semi-rural communities around Montreal supports a diverse economy built on manufacturing, logistics and transportation, aerospace, agriculture, and retail trade. The concentration of these industries around the perimeter of Montreal reflects the area's long-standing role as a suburban and logistical extension of the city rather than a separate economic center.