Area Codes for Ottawa, Ontario

There are three area codes actively in use or planned for the Ottawa metropolitan area: 613, 343, 819. Two area codes cover Ottawa proper and other nearby locations in Ontario province. One covers locations across the Ottawa River in the sister city of Gatineau, Quebec. See below for details.

In Ottawa, area codes are always included in written telephone numbers and area codes must be dialed for all calls, even for local calling. All Canada phone numbers are 10-digits total, including a 3-digit area code and a 7-digit local subscriber number.

Ottawa area code information:

• Area codes for Ottawa and Ontario
• Area codes by town
• Lookup area codes
• Ottawa area code maps

Area codes are used to route phone calls to a specific geographic area within a country. All area codes in Canada are exactly 3-digits long.

In the past, a given region often had just one area code. Nowadays, many cities and towns in denser urban areas have 2 or more area codes.

To make an inbound international call (or domestic long distance call) to a Ottawa landline or mobile phone, you need to dial the appropriate 3-digit area code, followed by a 7-digit local subscriber number.

If you don't have a fully specified 10-digit phone number, including area code, you will not be able to complete an inbound call.

Lookup Ottawa phone numbers

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Lookup Ottawa Area Codes

To find the area codes (or ZIP codes) used in the Ottawa area, please use the WhitePages.com search widgets below. The first widget looks up area codes and ZIP codes by town. The second widget does reverse lookup by area code or ZIP code.

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Ottawa, Ontario Area Code Maps

The following map shows area codes for Ottawa and large parts of the provinces of Ontario and Quebec, Canada.

Ontario Area Code Map

Source: Canadian Numbering Administrator Area Code Maps

Maps may not be completely up to date. Check other map links below if this appears out of date.

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City Codes vs. Area Codes

In some cases, area codes may be referred to as city codes. However, a 'city code' more correctly refers to the codes used to designate airports and other geographic locations. These codes are issued under the United Nation's UN/LOCODE system and/or the IATA airport coding system. The city code for Ottawa is OTT.

Other Area Code Information

• WhitePages.com - USA & Canada area code maps
• CNA* - Canada area codes map
• NANPA* - USA area codes search
• NANPA* - USA area code maps
• NANPA* - US national area code map (with time zone overlay)
• NANPA* - planned area code changes

* CNA is the Canadian Numbering Administrator. NANPA is the North American Numbering Plan Administrator. These are the official groups responsible for phone numbers in the US and Canada.

Ottawa online telephone directories

Ottawa dialing steps