Canada at present uses 40 zone codes which are alloted to particular geographic zones in addition to zone codes 600 and 622 which are not doled out to a geographic region. The region utilizing the most zone codes is Ontario which is utilizing fourteen region codes taken after by Quebec which is utilizing nine territory codes. A few different areas share region codes, for example, Nova Scotia and Prince Edward Island which utilize territory codes 902 and 782, and additionally, Yukon, Northwest Territories and Nunavut which utilize zone code 867. The territory of New Brunswick utilizes just a single zone code which is region code 506.
In 2012 two new region codes were set into benefit in Canada. Quebec actualized zone code 873 as an overlay of zone code 819 on September 15, 2012 and Manitoba executed region code 431 as an overlay of region code 204 on November 3, 2012.
In 2013 four new region codes were set into benefit in Canada. Ontario actualized two new zone codes 437 and 365 on March 25, 2013. Zone code 437 is an overlay of region codes 416 and 647 and region code 365 is an overlay of region codes 905 and 289. Saskatchewan executed territory code 639 as an overlay of region code 306 on May 25, 2013 and British Columbia actualized zone code 236 as an overlay of region codes 250, 604 and 778 on June 1, 2013.