North American Numbers Source-cited · ownership disclosed
Area code
306
In service
Canada · since 1947

Saskatchewan (Regina)

Area code 306 is the original telephone area code for the entire Canadian province of Saskatchewan, assigned in 1947. It is now overlaid province-wide by 639 and 474.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Saskatchewan (Regina)
Type
geographic
Status
in service
In service since
1947
Projected exhaust
2032 Q2

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 306 is

All of Saskatchewan, Canada — including Regina, Saskatoon, Prince Albert, Moose Jaw and Swift Current..

Communities served wholly or partly by 306:

ReginaSaskatoonPrince AlbertMoose JawSwift CurrentYorkton

Province-wide code; not tied to a single city.

B · Relationships

How it relates to other codes

The codes 306 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2013 639 Saskatchewan (province-wide overlay) First overlay added over the same all-Saskatchewan area.
Overlay · 2021 474 Saskatchewan (province-wide overlay) Second overlay added over the same all-Saskatchewan area.
What's changing. Base code; overlaid province-wide by 639 (2013) and 474 (2021). Saskatchewan never split — always a single NPA with overlays added.
C · History

How 306 got here

1947
Assigned as one of the original North American area codes, covering all of Saskatchewan.
Source: Wikipedia
2013-05-25
First overlay 639 placed into service; mandatory 10-digit dialing had begun May 11, 2013.
Source: Wikipedia
2021-10-02
Second overlay 474 placed into service across Saskatchewan.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
777
Prefixes available
0

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 306 with another code →
Sources
Wikipedia ↗
Area codes 306, 639, and 474
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.