ONTARIO · AREA CODE GUIDE
343 area code location: Kingston and Cornwall, Ontario
- Local date and time
- Eastern Time
Map data: HSIP (2010) · NANPA · Statistics Canada (Open Government Licence – Canada) · US Census Bureau, checked 26 September 2026. Boundaries are approximate.
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Download the 343 area code map
A printable area code 343 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
343 area code at a glance
- Province
- Ontario
- Primary cities
- Kingston, Cornwall, and Belleville
- Established
- Prefixes in service
- 641 as of 26 September 2026
An area code does not show where a caller is now.
History
Country and calling code: Canada (+1).
Parent code: 613.
New code planned: No, as of 22 September 2026.
Time zone
- Eastern Time
- Standard time UTC−05:00
- Daylight saving time UTC−04:00
Communities covered
343 numbers are issued across 116 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.
- Ottawa-Hull
- Kingston
- Cornwall
- Belleville
- Brockville
- Bancroft
- Kanata-Stittsville
- Jockvale
- Merrickville
- Carleton Place
- Smiths Falls
- Hawkesbury
- Orleans
- Vankleek Hill
- Alfred
- Rockland
- Tweed
- Arnprior
- Bloomfield
- Brighton
- Casselman
- Frankford
- Napanee
- Northbrook
- Pakenham
91 more communities
- Pembroke
- Picton
- Richmond
- Wellington
- Almonte
- Arden
- Carp
- Chesterville
- Clarence Creek
- Cumberland
- Deseronto
- Embrun
- Gloucester
- Kemptville
- Madoc
- Marmora
- Maynooth
- Morrisburg
- Perth
- Plevna
- Russell
- Stirling
- Trenton
- Winchester
- Alexandria
- Bath
- Bourget
- Cardiff
- Coe Hill
- Constance Bay
- Crysler
- Denbigh
- Gananoque
- Iroquois
- Manotick
- Metcalfe
- Navan
- Odessa
- Plantagenet
- Seeleys Bay
- South Mountain
- Wooler
- Adolphustown
- Delta
- Enterprise
- Gilmour
- Harrowsmith
- Ingleside
- Inverary
- L'Orignal
- Lancaster
- Maxville
- North Gower
- Osgoode
- Selby
- St-Regis
- St. Isidore
- Sydenham
- Tamworth
- Thurlow
- Williamsburg
- Wolfe Island
- Avonmore
- Cardinal
- Chalk River
- Cobden
- Deep River
- Eganville
- Elgin
- Finch
- Glen Robertson
- Long Sault
- Martintown
- Newburgh
- St. Eugene
- Verona
- Yarker
- Athens
- Barry's Bay
- Calabogie
- Killaloe
- Lanark
- North Augusta
- Petawawa
- Portland
- Prescott
- Renfrew
- Rolphton
- Sharbot Lake
- Westport
- Whitney
Notable places in 343
| Place | Where | What it is |
|---|---|---|
| Queen's University | 5.9 km from Wolfe Island | University |
| National Gallery of Canada | 14.6 km from Orleans | Museum |
| University of Ottawa | 13.7 km from Orleans | University |
| Carleton University | 13.8 km from Jockvale | University |
| Canadian Tire Centre | 10.1 km from Carp | Arena |
| Ottawa Macdonald-Cartier International Airport | 8.6 km from Jockvale | Airport |
| Thousand Islands National Park | 7.9 km from Lansdowne | National park |
| Canadian Museum of Nature | 14.7 km from Orleans | Museum |
| Canadian War Museum | 16.5 km from Orleans | Museum |
| Kingston/Norman Rogers Airport | 11.5 km from Odessa | Airport |
Also serving this area
Questions about 343
Where is the 343 area code?
343 is in Ontario. Its numbers are issued in Kingston, Cornwall, Belleville, and 113 other communities.
What time zone is area code 343 in?
343 is in Eastern Time. Daylight saving time is observed.
Is 343 an overlay?
Yes. 343 was added as an overlay on 613 on 17 May 2010.
What communities are in the 343 area code?
Kingston, Cornwall, Belleville, Brockville, and Bancroft, and 111 other communities.
What province is area code 343 in?
Area code 343 is in Ontario.
Is 343 a toll-free area code?
No. 343 is a geographic area code. The toll-free codes are 800, 833, 844, 855, 866, 877, and 888.
Sources: NANPA area code listing, CNA code status. Checked .
Business phone numbers in area code 343, answered by an AI agent
A local number for Kingston, Cornwall, and Belleville, 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.