About 639:
Area code 639 was first put in service May 25, 2013. Currently, it covers the entire state of Saskatchewan, and it overlaps coverage areas with area code 306.
Related Cities:
Area codes 306 and 639 cover the entire province of Saskatchewan including the larger cities and communities of Estevan, Humboldt, Moose Jaw, North Battleford, Prince Albert, Regina, Saskatoon, Swift Current, Weyburn and Yorkton in addition to many smaller communities throughout Saskatchewan.