Is Longueuil part of Montreal?

No, Longueuil is a separate city on Montreal's South Shore. It's Quebec's fifth-largest city with its own mayor and city council.

What timezone is Longueuil?

Longueuil operates on Eastern Time (ET), the same as Montreal and Toronto.

Is Pratt & Whitney in Longueuil?

Yes, Pratt & Whitney Canada is headquartered in Longueuil. The aerospace company is one of the region's largest employers.

Can you take the metro to Longueuil?

Yes, the Montreal metro's Yellow Line connects Longueuil to downtown Montreal. Metro access makes Longueuil attractive for commuters.

Longueuil Phone Numbers

Get a Longueuil, QC Phone Number

Montreal's largest South Shore suburb, Longueuil is an aerospace and tech hub directly across the St. Lawrence. The 450 area code signals Greater Montreal suburban presence. Phone2 connects you to this important industrial center.

Area Code

450

State

Population

250,000

Timezone

Eastern Time (ET)

All Area Codes

450 579

Last updated: July 18, 2026 at 12:29 AM UTC

Longueuil, QC

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The best available Longueuil, QC numbers right now, pulled live from our carrier network. Last updated: July 18, 2026 at 12:29 AM UTC.

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Business in Longueuil

Longueuil's economy is driven by aerospace, with Pratt & Whitney Canada headquarters here. The city offers lower costs than Montreal Island with metro access. Tech and professional services have grown alongside aerospace.

Why Choose Phone2 for Longueuil?

A 450 number signals Greater Montreal suburban presence. For aerospace companies and businesses serving the South Shore market, Phone2's local numbers build credibility in this industrial hub.

Key Industries in Longueuil

Aerospace

Pratt & Whitney Canada is headquartered in Longueuil. Aerospace manufacturing and related services are the dominant industry.

Technology

Tech companies have established operations in Longueuil, attracted by lower costs and metro access to downtown Montreal.

Government & Transportation

The Agence métropolitaine de transport and other agencies have offices here. Saint-Hubert Airport adds transportation services.

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Frequently Asked Questions about Longueuil

Longueuil uses 450 as its primary area code, with 579 as an overlay. The 450 code covers the Greater Montreal suburbs.

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