Area Code 431 History:
11/03/12 Area code 431 was 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.
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, Portage la Prairie, Selkirk, Steinbach, Swan River, Thompson and Winnipeg in addition to the entire province of Manitoba