Area Code 431
(204 and 431)
Area Code 431 History:
11/03/12 Area code 431 was officially put into service as an overlay of area code 204. Area codes 204/431 cover the entire province of Manitoba. Mandatory 10 digit dialing is required.
Area code 584 has been approved as an all services overlay covering existing area codes 204 and 431 with an in service date of 10/29/2022. Ten digit dialing is already necessary in the existing 204/431 overlay and will include 584 when it is put into service. Ten digit dialing (area code + seven digit number) is necessary when two or more area codes cover the same geographic area.
Ten digit dialing (area code + seven digit number) is necessary in the 204/431 overlay because two different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.
Major cities or places in Manitoba within area code 431 include:
Area codes 204 and 431 serve the larger communities of Brandon Brandon, Dauphin, Portage La Prairie, Selkirk, Swan River, Steinbach Thompson, Winkler and Winnipeg in addition to the entire province of Manitoba.