Area Code 438 — Montreal, Quebec

438 Area Code – Montreal, Quebec: Location, Time Zone & History

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About Area Code 438

Region Code
438
City
Montreal
State
Quebec
Population
2,004,265
Largest City
Montreal
Neighboring Codes
  • 450 (Laval, Quebec)
Time Zone
Eastern Time

Map of Area Code 438

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History & Cultural Notes

Few places in the North American Numbering Plan carry as many overlapping area codes as the Island of Montreal. Code 438 was added on November 4, 2006 as an overlay on the existing area code 514, a step taken to relieve number exhaustion, and its arrival made ten-digit dialing mandatory across the shared numbering plan area. It was not the last addition: the Canadian Numbering Administrator reserved code 263 in 2017, and that third overlay entered service on October 22, 2022, under CRTC Telecom Decision 2021-364.

The 514/438/263 complex covers the City of Montreal and nearby communities including Westmount, Mount Royal, Dollard-des-Ormeaux, Dorval, and Pointe-Claire. Its industries reflect a diversified urban economy:

  • Aerospace
  • Information technology and video game development
  • Finance
  • Life sciences and pharmaceuticals
  • Logistics and port shipping

Montreal's island geography is part of what makes the numbering situation distinctive. The 514/438/263 complex is ringed on the mainland by the separate 450/579/354 "doughnut" complex, a layout that mirrors the way the city itself is set apart by water from its surrounding suburbs.