North American Numbers Source-cited · ownership disclosed
Area code
624
In service
United States · since 2023

Buffalo / Western NY (overlay)

All-service overlay of area code 716, serving Buffalo, Niagara Falls and the surrounding western New York region.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Buffalo / Western NY (overlay)
Type
geographic
Status
in service
In service since
2023
Projected exhaust
2095 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 624 is

Western New York (Buffalo/Niagara region).

Communities served wholly or partly by 624:

BuffaloNiagara FallsJamestownLockport

Shares 716's footprint (Erie, Cattaraugus, Chautauqua, Niagara counties).

B · Relationships

How it relates to other codes

The codes 624 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 716 Buffalo / Niagara Overlays 716 after a 2022 study projected 716 prefix exhaustion in 2024.
What's changing. Active overlay of 716 for western New York; ten-digit dialing required.
C · History

How 624 got here

2023-11-16
Became active as an all-service overlay of 716.
Source: Wikipedia 716/624
D · Capacity

How full it is

Prefixes assigned
16
Prefixes available
784

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

Compare 624 with another code →
Sources
Wikipedia (secondary) ↗
Area codes 716 and 624
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.