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/835

835 area code

Area code 835 is in Pennsylvania. It covers Allentown, Reading, Bethlehem and 129 other places: 88 ZIP codes in Lehigh, Berks, Northampton and 3 other counties. Local time there is , Eastern Time. In service since 2022 as an overlay: it covers the same area as 484 and 610, so a number from there can have any of them.

Time zone
Eastern
Largest city
Reading
Overlays
484, 610
In service since
2022
Rate centres
31
Prefixes assigned
111 (1,110,000 numbers)

Who calls from a 835 number

NANPA records the carrier each block of 835 numbers is assigned to. Of the 979,000 835 numbers assigned, 73% are with mobile carriers (AT&T Mobility, T-Mobile and Verizon Wireless); 27% with cable, internet-calling, business and other carriers (Onvoy and Eon Telecom).

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 835 numbers
CarrierKindShare
AT&T MobilityMobile52%
OnvoyCable, VoIP, other17%
T-MobileMobile15%
Verizon WirelessMobile5%
Eon TelecomCable, VoIP, other3%
Boost MobileMobile1%

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 835

The 23 places with a telephone rate centre of their own using 835, largest first. Each links to its ZIP codes.

Places in area code 835
PlaceZIP codesPopulation
Allentown, PA 8 125,976
Reading, PA 12 95,242
Bethlehem, PA 6 77,956
Easton, PA 5 29,739
Pottstown, PA 2 23,476
West Chester, PA 4 20,666
Coatesville, PA 1 13,353
Northampton, PA 1 10,400
Catasauqua, PA 1 6,541
Nazareth, PA 1 6,043
Lehighton, PA 1 5,268
Hamburg, PA 1 4,456
Slatington, PA 1 4,290
Fleetwood, PA 1 4,064
Parkesburg, PA 1 3,937
Bath, PA 1 2,864
Atglen, PA 1 1,272
Bally, PA 1 1,161
Pughtown, PA — 1,125
Avondale, PA 1 1,084
Bernville, PA 1 802
Eagle, PA — 413
Centerport, PA 1 342

Nearby places using 835

These places have no rate centre of their own in NANPA's records; the nearest one uses 835. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 835

88 ZIP codes in 55 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 835 numbers are issued

NANPA's rate centres with the most 835 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 835
Rate centrePlacePrefixes
ALLENTOWN Allentown 31
PHPHSBZN30 — 16
PHPHSBZN23 — 15
BETHLEHEM Bethlehem 7
READING Reading 6
PHPHSBZN10 — 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 835

Where is area code 835?

Area code 835 is in Pennsylvania. It covers Allentown, Reading, Bethlehem and 129 other places: 88 ZIP codes in Lehigh, Berks, Northampton and 3 other counties.

What ZIP codes are in area code 835?

88 ZIP codes, by the town each is mailed to: Allentown (8, 18101 to 18195), Reading (12, 19601 to 19612), Bethlehem (6, 18015 to 18025), Easton (5, 18040 to 18045) and 51 more towns. The full list is on this page.

What time zone is area code 835 in?

Eastern time.

Is a 835 number a mobile or a landline?

It can be either. 73% of 835 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 835?

484 and 610. They cover the same area as 835, so a new number there can be given any of them.

Does a 835 number mean the caller is in Pennsylvania?

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 835 call can come from anywhere.

Other area codes in Pennsylvania

All 15 Pennsylvania 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 835.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/835

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