ONTARIO · AREA CODE GUIDE
365 area code location: Hamilton and Oshawa, Ontario
- Local date and time
- Eastern Time
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Download the 365 area code map
A printable area code 365 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
365 area code at a glance
- Country and calling code
- Canada (+1)
- In service since
- Parent code
- 905
- New code planned
- No, as of 22 September 2026
An area code does not show where a caller is now.
Sources: NANPA area code listing, CNA code status. Checked .
History
Time zone
- Eastern Time
- Standard time UTC−05:00
- Daylight saving time UTC−04:00
Where 365 reaches
365 numbers are issued across 94 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.
- Hamilton
- Oshawa
- St. Catharines-Thorold
- Brampton
- Cooksville
- Oakville
- Streetsville
- Thornhill
- Unionville
- Malton
- Burlington
- Ajax-Pickering
- Newmarket
- Milton
- Aurora
- Richmond Hill
- Markham
- Niagara Falls
- South Pickering
- Woodbridge
- Clarkson
- Cobourg
- Welland
- Whitby
- Oak Ridges
69 more communities
- Port Credit
- Caledon East
- Maple
- Beeton
- Castlemore
- Fort Erie
- Gormley
- Keswick
- Georgetown
- Stoney Creek
- Bolton
- Bowmanville
- Bradford
- Brooklin
- Claremont
- Dunnville
- Stouffville
- Uxbridge
- Ancaster
- Bethesda
- Dundas
- Grimsby
- Hampton
- King City
- Kleinburg
- Mount Albert
- Newcastle
- Niagara-On-The-Lake
- Nobleton
- Orono
- Palgrave
- Port Colborne
- Port Hope
- Port Perry
- Queensville
- Schomberg
- Snelgrove
- Sutton
- Tottenham
- Victoria
- Waterdown
- Beamsville
- Binbrook
- Blackstock
- Caledonia
- Campbellville
- Castleton
- Cayuga
- Colborne
- Cold Springs
- Fisherville
- Freelton
- Garden Hill
- Grafton
- Hagersville
- Mount Hope
- Newtonville
- Pelham
- Port Robinson
- Ridgeway
- Roseneath
- Selkirk
- Stevensville
- Vineland
- Wainfleet
- Welcome
- Wellandport
- West Lincoln
- Winona
Notable places in 365
| Place | Where | What it is |
|---|---|---|
| Toronto Pearson International Airport | 3.3 km from Malton | Airport |
| McMaster University | 2.2 km from Dundas | University |
| Brock University | 9.3 km from Port Robinson | University |
| John C. Munro Hamilton International Airport | 7.4 km from Ancaster | Airport |
| HMCS Haida | 7.0 km from Dundas | Museum |
| Hamilton Stadium | 9.3 km from Dundas | Stadium |
| Canada's Wonderland | 6.5 km from Kleinburg | Amusement park |
| Ontario Tech University | 5.2 km from Whitby | University |
| TD Coliseum | 5.8 km from Dundas | Arena |
| Buttonville Municipal Airport | 4.0 km from Unionville | Airport |
Area code 289 has its own page.
Area code 365
365 started service on .It came from 905.
It covers part of the 905 area: its numbers are not issued in 6 of 905's communities.
No new code is planned for the region as of .
Area code 742 has its own page.
Area code 905 has its own page.
Questions about 365
Where is the 365 area code?
365 is in Ontario. Its numbers are issued in Hamilton, Oshawa, Brampton, and 91 other communities.
What time zone is area code 365 in?
365 is in Eastern Time. Daylight saving time is observed.
Is 365 an overlay?
Yes. 365 was added as an overlay on 905 on 25 March 2013.
Business phone numbers in area code 365, answered by an AI agent
A local number for Hamilton, Oshawa, and Brampton, Ontario, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.