townzips

Allentown, PA ZIP Codes

Allentown, Pennsylvania has 8 ZIP codes: 7 for street addresses (, , , , , and 1 more) and 1 for PO boxes ().

Your street decides which one you use.

Which Allentown ZIP code is my address in?

Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?

Allentown ZIP code map

ZIP code map of Allentown, PA7 ZIP code areas in Allentown: 18101, 18102, 18103, 18104, 18106, 18109, 18195. Dashed line: Allentown city limits. Grey areas: neighboring towns.181041810318109181061810218101181951810418103181091810618102WhitehallOrefieldSchnecksvilleCenter ValleyBethlehemBreinigsvilleMacungieEmmausCoplayNorthamptonCatasauqua18104181031810918106WhitehallOrefieldSchnecksvilleBethlehemMacungieEmmausCoplayNorthampton

Tap or point to an area to see its ZIP code.Full-size map

18105 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Allentown city limits.

Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).

All Allentown ZIP codes by type

ZIPType and post office or station
18101street delivery
Allentown Airport
18102street delivery
Allentown Airport
18103street delivery
Allentown Airport
18104street delivery
Allentown Airport
18105PO boxes at the Allentown post office
Allentown
18106street delivery
Wescosville
18109street delivery
Allentown Airport
18195street delivery
Allentown Airport

Why your mail may say Allentown when you live outside it

Allentown ZIP codes also cover South Whitehall Township, Salisbury Township and Upper Macungie Township, so a letter addressed to Allentown can go to a home outside the city limits.

A ZIP code does not set your city, school district or tax. Lehigh County property records show which city you are in.

Allentown ZIP code questions

What is the main ZIP code for Allentown?

18101, the ZIP code of the main Allentown Airport post office at 1000 Postal Rd Side.

Which Allentown ZIP codes are for PO boxes only?

18105. Mail to it goes to boxes at the post office, not to street addresses.

What county is Allentown in?

Lehigh County.

ZIP codes for towns near Allentown

Bethlehem, PA5 ZIP codes: 18015, 18016, 18017 and more · 6 milesLower Macungie Township, PA4 ZIP codes: 18011, 18062, 18103 and more · 6 milesReading, PA12 ZIP codes: 19601, 19602, 19604 and more · 29 milesNorristown, PA3 ZIP codes: 19401, 19403 and more · 33 milesWarminster Township, PA2 ZIP codes: 18974 and more · 34 milesUpper Merion Township, PA2 ZIP codes: 19087, 19406 · 35 miles

More towns near Allentown: Hazleton, Tredyffrin Township, Northampton Township, Abington Township, Radnor Township, Cheltenham Township, Lower Merion Township, Lower Makefield Township, Middletown Township.

Sources and last checked

USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.

Checked October 20, 2026. Sources · How we build our lists · Corrections