Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — AREA-CODE/934

934 area code

Area code 934 is in New York. It covers Brentwood, Wyandanch, West Babylon and 146 other places: 105 ZIP codes in Suffolk and Nassau counties. Local time there is , Eastern Time. In service since 2016 as an overlay: it covers the same area as 631, so a number from there can have either code.

Time zone
Eastern
Largest city
Bay Shore
Overlays
631
In service since
2016
Rate centres
46
Prefixes assigned
131 (1,310,000 numbers)

Who calls from a 934 number

NANPA records the carrier each block of 934 numbers is assigned to. Of the 1.2 million 934 numbers assigned, 64% are with cable, internet-calling, business and other carriers (Onvoy, Commio and Peering Hub); 36% with mobile carriers (T-Mobile and AT&T Mobility).

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 934 numbers
CarrierKindShare
OnvoyCable, VoIP, other35%
T-MobileMobile20%
AT&T MobilityMobile12%
CommioCable, VoIP, other4%
Peering HubCable, VoIP, other3%
IP HorizonCable, VoIP, other3%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 934

The 40 places with a telephone rate centre of their own using 934, largest first. Each links to its ZIP codes.

Places in area code 934
PlaceZIP codesPopulation
Brentwood, NY 1 152,614
Central Islip, NY 1 38,373
Commack, NY 1 36,558
Bay Shore, NY 1 31,683
Deer Park, NY 1 27,990
Lindenhurst, NY 1 27,142
Smithtown, NY 1 24,375
Selden, NY 1 21,604
Huntington, NY 1 19,948
Ronkonkoma, NY 1 18,709
Islip, NY 1 17,362
Kings Park, NY 1 16,516
Hampton Bays, NY 1 15,706
Sayville, NY 1 15,408
Riverhead, NY 1 14,936
St. James, NY 1 13,244
Stony Brook, NY 2 12,868
Patchogue, NY 1 12,396
Babylon, NY 1 12,185
Amityville, NY 1 9,588
Center Moriches, NY 1 9,127
Bayport, NY 1 8,921
Farmingdale, NY 2 8,474
Northport, NY 1 7,322
Yaphank, NY 1 6,934
Southold, NY 1 6,397
Southampton, NY 2 4,621
Montauk, NY 1 4,223
Westhampton, NY 1 3,900
Water Mill, NY 1 2,764
Greenport, NY 1 2,574
Bellport, NY 1 1,948
Jamesport, NY 1 1,593
Bridgehampton, NY 1 1,531
Atlantic Beach, NY 1 1,422
East Hampton, NY 1 1,297
Peconic, NY 1 848
Amagansett, NY 1 821
Shoreham, NY 1 537
Fire Island, NY — 352

Nearby places using 934

These places have no rate centre of their own in NANPA's records; the nearest one uses 934. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 934

105 ZIP codes in 97 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 934 numbers are issued

NANPA's rate centres with the most 934 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 934
Rate centrePlacePrefixes
RIVERHEAD Riverhead 16
AMITYVILLE Amityville 12
BRENTWOOD Brentwood 8
BABYLON Babylon 6
PATCHOGUE Patchogue 6
YAPHANK Yaphank 5

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 934

Where is area code 934?

Area code 934 is in New York. It covers Brentwood, Wyandanch, West Babylon and 146 other places: 105 ZIP codes in Suffolk and Nassau counties.

What ZIP codes are in area code 934?

105 ZIP codes, by the town each is mailed to: Brentwood (11717), Wyandanch (11798), West Babylon (2, 11704 to 11707), Coram (11727) and 93 more towns. The full list is on this page.

What time zone is area code 934 in?

Eastern time.

Is a 934 number a mobile or a landline?

It can be either. 36% of 934 numbers are assigned to mobile carriers and 0% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 934?

631. They cover the same area as 934, so a new number there can be given any of them.

Does a 934 number mean the caller is in New York?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 934 call can come from anywhere.

Other area codes in New York

All 23 New York area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 934.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/934

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