Serves Westchester County, New York. One of the original 1947 codes; its once-large territory spawned 516 (1951) and 845 (2000).
The essentialsNumbering data · NumberResearch · as of 2026-09-18
Place
Westchester County
Type
geographic
Status
in service
In service since
1947
Projected exhaust
2033 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.
The codes 914 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?
Spawned · 1951516Nassau CountyLong Island (Nassau/Suffolk) split from 914 to form 516.
Spawned · 2000845Hudson ValleyHudson Valley split off as 845, reducing 914 to Westchester.
What's changing. No overlay; sole area code for Westchester County (ten-digit dialing in effect due to the 988 rollout).
C · History
How 914 got here
1947
Original code covering Delaware, Dutchess, Nassau, Orange, Putnam, Rockland, Suffolk, Sullivan, Ulster and Westchester counties.
Source: Wikipedia 914
1951
Long Island split off to form 516.
Source: Wikipedia 914
2000-06-05
Reduced to Westchester County; the remainder became 845.
Source: Wikipedia 914
2021-10
Ten-digit dialing became mandatory (988 rollout).
Source: Wikipedia 914
D · Capacity
How full it is
Prefixes assigned
727
Prefixes available
73
Thousands-blocks assigned
3,481
Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.
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.
North American Numbers