North American Numbers Source-cited · ownership disclosed
Area code
320
In service
United States · since 1996

Central Minnesota (St. Cloud)

Serves the central third of Minnesota outside the Twin Cities metro, created in 1996 as the first new Minnesota area code in 42 years when it split from the old wide 612 territory.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Central Minnesota (St. Cloud)
Type
geographic
Status
in service
In service since
1996
Projected exhaust
2070 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 320 is

Central Minnesota outside the Twin Cities metro (St. Cloud region and surrounding counties)..

Communities served wholly or partly by 320:

St. CloudWillmarAlexandriaMorrisLittle Falls

Broad rural coverage.

B · Relationships

How it relates to other codes

The codes 320 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?

Split from · 1996 612 Minneapolis Split from the old central-band 612 after US West requested relief in 1995.
Related · 1996 218 Northern Minnesota (Duluth) Adjacent to the north.
Related · 1996 507 Southern Minnesota (Rochester) Adjacent to the south.
What's changing. No overlay; standalone area code.
C · History

How 320 got here

1996-03-17
Area code 320 became effective as a split from 612; the first new Minnesota area code in 42 years.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
535
Prefixes available
265
Thousands-blocks assigned
1,962

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

Compare 320 with another code →
Sources
Wikipedia ↗
Area code 320
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.