Area Code 604 History:
Area code 604 was put into service. In 1996 area code 604 was split to form area code 250. In 2001 area code 604 was partially overlaid with area code 778. In 2008 the overlay was expanded to include all of area code 604 and area code 250.
Area code 236 was put into service as an overlay of area codes 250, 604, and 778 on 06/01/2013 and mandatory 10 digit dialing is required.
Ten digit dialing (area code + seven digit number) is necessary in the 604/778/236 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 British Columbia within area code 604 include:
Area codes 604 and 778 and 236 serve southwestern British Columbia including the larger communities of Abbotsford, Aldergrove, Burnaby, Chilliwach, Langley, New Westminster, North Vancouver, Port Coquitlam, Port Moody, Powell River, Richmond, Surry and Vancouver along with many smaller communities in southwestern British Columbia.