North American Numbers Source-cited · ownership disclosed
Area code
607
In service
United States · since 1954

Southern Tier

Serves the Southern Tier of New York along the Pennsylvania border, created in 1954 from parts of 315 and 716. The only NY area code that has never needed exhaustion relief.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Southern Tier
Type
geographic
Status
in service
In service since
1954
Projected exhaust
2048 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 607 is

Southern Tier of New York State.

Communities served wholly or partly by 607:

BinghamtonElmiraIthacaCorningCortlandOneonta

Representative; the NPA spans about 14 counties.

B · Relationships

How it relates to other codes

The codes 607 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 · 1954 315 Syracuse / North-Central NY Formed from the southern part of 315.
Split from · 1954 716 Buffalo / Niagara Also formed from the eastern part of 716.
What's changing. No overlay; the only NY area code never to have required exhaustion relief.
C · History

How 607 got here

1954
Created by combining a southern part of 315 and an eastern part of 716 — among the first split-created codes.
Source: Wikipedia 607
2021
Transitioned to ten-digit dialing due to the 988 designation.
Source: Wikipedia 607
D · Capacity

How full it is

Prefixes assigned
564
Prefixes available
236
Thousands-blocks assigned
2,917

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

Compare 607 with another code →
Sources
Wikipedia (secondary) ↗
Area code 607
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.