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/610

610 area code

Area code 610 is in Pennsylvania. It covers Allentown, Reading, Bethlehem and 250 other places: 196 ZIP codes in Chester, Berks, Lehigh and 6 other counties. Local time there is , Eastern Time. In service since 1994; 484 (1999) and 835 (2022) overlay it, so a number from there can have any of them.

Time zone
Eastern
Largest city
Reading
Overlays
484, 835
In service since
1994
Rate centres
90
Prefixes assigned
782 (7,820,000 numbers)

Who calls from a 610 number

NANPA records the carrier each block of 610 numbers is assigned to. Of the 7.6 million 610 numbers assigned, 44% are with local phone companies (Verizon); 29% with cable, internet-calling, business and other carriers (Onvoy and Verizon Business); 25% with mobile carriers (AT&T Mobility, Verizon Wireless and T-Mobile); 3% with paging companies.

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 610 numbers
CarrierKindShare
VerizonLandline37%
AT&T MobilityMobile9%
OnvoyCable, VoIP, other8%
Verizon WirelessMobile8%
T-MobileMobile7%
Verizon BusinessCable, VoIP, other4%

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 610

The 64 places with a telephone rate centre of their own using 610, largest first. Each links to its ZIP codes.

Places in area code 610
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
Phoenixville, PA 1 19,452
Chester Springs, PA 1 17,219
Douglassville, PA 1 16,805
Coatesville, PA 1 13,353
Emmaus, PA 3 11,889
Landenberg, PA 1 10,945
Northampton, PA 1 10,400
Kunkletown, PA 1 9,674
Downingtown, PA 1 8,255
Exton, PA 1 6,772
Catasauqua, PA 1 6,541
Hellertown, PA 1 6,118
Nazareth, PA 1 6,043
Oxford, PA 1 5,825
Palmerton, PA 1 5,622
Lehighton, PA 1 5,268
Collegeville, PA 1 5,247
Bangor, PA 1 5,163
Birdsboro, PA 1 5,116
Royersford, PA 1 4,945
Hamburg, PA 1 4,456
Slatington, PA 1 4,290
Boyertown, PA 1 4,287
Kutztown, PA 1 4,180
Fleetwood, PA 1 4,064
Parkesburg, PA 1 3,937
Pen Argyl, PA 1 3,495
Upper Black Eddy, PA 1 3,104
Womelsdorf, PA 1 2,904
Bath, PA 1 2,864
West Grove, PA 1 2,798
Coopersburg, PA 1 2,495
Robesonia, PA 1 2,261
Topton, PA 1 2,215
Leesport, PA 1 2,166
Honey Brook, PA 1 1,941
Schwenksville, PA 1 1,385
Morgantown, PA 1 1,381
Atglen, PA 1 1,272
Bally, PA 1 1,161
Oley, PA 1 1,153
Pughtown, PA — 1,125
Avondale, PA 1 1,084
Bowmanstown, PA 1 968
Glenmoore, PA 1 910
Riegelsville, PA 1 860
Bernville, PA 1 802
New Tripoli, PA 1 717
Unionville, PA — 652
Eagle, PA — 413
Centerport, PA 1 342
Kempton, PA 1 148
Kresgeville, PA 1 115
Springtown, PA 1 85
Sassamansville, PA 1 54
Kemblesville, PA 1 —
Mendenhall, PA 1 —
Westtown, PA 1 —

Nearby places using 610

These places have no rate centre of their own in NANPA's records; the nearest one uses 610. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 610

196 ZIP codes in 158 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 610 numbers are issued

NANPA's rate centres with the most 610 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 610
Rate centrePlacePrefixes
PHPHSBZN30 — 86
ALLENTOWN Allentown 71
READING Reading 58
PHPHSBZN28 — 38
BETHLEHEM Bethlehem 32
PHPHSBZN23 — 29

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 610

Where is area code 610?

Area code 610 is in Pennsylvania. It covers Allentown, Reading, Bethlehem and 250 other places: 196 ZIP codes in Chester, Berks, Lehigh and 6 other counties.

What ZIP codes are in area code 610?

196 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 154 more towns. The full list is on this page.

What time zone is area code 610 in?

Eastern time.

Is a 610 number a mobile or a landline?

It can be either. 25% of 610 numbers are assigned to mobile carriers and 44% 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 610?

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

Does a 610 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 610 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 610.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/610

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