North American Numbers Source-cited · ownership disclosed
Area code
924
In service
United States · since 2024

Southern Minnesota (overlay of 507)

An all-service overlay of area code 507, serving the same southern-Minnesota geography. Made assignable on August 30, 2024, it is Minnesota's first-ever overlay.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Southern Minnesota (overlay of 507)
Type
geographic
Status
in service
In service since
2024
Projected exhaust
2118 Q3

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 924 is

Same geography as 507 — southern Minnesota (Rochester, Mankato, Winona and surrounding communities)..

Communities served wholly or partly by 924:

RochesterMankatoWinonaOwatonnaAlbert LeaAustin

Overlay: shares 507's entire footprint. Re-check NANPA for latest assignment status.

B · Relationships

How it relates to other codes

The codes 924 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 · 2024 507 Southern Minnesota (Rochester) Overlays the entire 507 service area; both codes cover the same geography.
What's changing. Overlay of 507. Code activated 2024 — re-check NANPA for current fill/assignment status.
C · History

How 924 got here

2023-03-30
Minnesota PUC approved 924 as an all-service overlay of 507.
Source: Wikipedia
2024-08-30
New 924 numbers became assignable.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
14
Prefixes available
786

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

Compare 924 with another code →
Sources
Wikipedia ↗
Area codes 507 and 924
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.