North American Numbers Source-cited · ownership disclosed
Area code
235
In service
United States · since 2024

Eastern Missouri (overlay of 573)

An all-services distributed overlay assigned in 2022 and effective in 2024, covering the same eastern-Missouri geography as area code 573. Re-check NANPA for latest status.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Eastern Missouri (overlay of 573)
Type
geographic
Status
in service
In service since
2024
Projected exhaust
2063 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 235 is

Eastern Missouri outside the St. Louis metro (same footprint as 573)..

Communities served wholly or partly by 235:

ColumbiaJefferson CityCape GirardeauRollaSikeston

Shares the entire 573 service area as an overlay.

B · Relationships

How it relates to other codes

The codes 235 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 573 Columbia / Jefferson City / eastern Missouri 235 overlays the existing 573 numbering plan area.
What's changing. Overlay of 573; effective March 24, 2024. Re-check NANPA for current fill status.
C · History

How 235 got here

2022-06-17
Assigned by the NANP Administrator as an overlay of 573.
Source: Wikipedia
2024-03-24
Overlay in-service effective date.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
54
Prefixes available
746
Thousands-blocks assigned
262

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

Compare 235 with another code →
Sources
Wikipedia ↗
Area codes 573 and 235
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.