North American Numbers Source-cited · ownership disclosed
Area code
975
In service
United States · since 2023

Kansas City (overlay)

An all-services overlay first approved in 2001 but suspended, then finally activated in 2023, covering the same Kansas City / St. Joseph geography as area code 816. Re-check NANPA for latest status.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Kansas City (overlay)
Type
geographic
Status
in service
In service since
2023
Projected exhaust
2069 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 975 is

Missouri side of the Kansas City metro and St. Joseph area (same footprint as 816)..

Communities served wholly or partly by 975:

Kansas CityIndependenceLee's SummitBlue SpringsSt. Joseph

Shares the entire 816 service area as an overlay.

B · Relationships

How it relates to other codes

The codes 975 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 · 2023 816 Kansas City 975 overlays the existing 816 numbering plan area.
What's changing. Overlay of 816; in service since October 13, 2023. Re-check NANPA for current fill status.
C · History

How 975 got here

2001-02
Overlay approved for October 2001 implementation, then suspended indefinitely by the MPSC.
Source: Wikipedia
2023-10-13
Overlay placed in service due to projected central office code exhaustion.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
41
Prefixes available
759
Thousands-blocks assigned
165

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

Compare 975 with another code →
Sources
Wikipedia ↗
Area codes 816 and 975
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.