United States Major Regions Postal Code Details

US United States Major Regions Postal Code Details

🏛️ Pennsylvania

17301

Adams

Postal Range: 17301~17375

15006

Allegheny

Postal Range: 15006~15295

15656

Armstrong

Postal Range: 15656~16263

15001

Beaver

Postal Range: 15001~16141

15521

Bedford

Postal Range: 15521~17211

18056

Berks

Postal Range: 18056~19612

16601

Blair

Postal Range: 16601~16693

16910

Bradford

Postal Range: 16910~18854

18039

Bucks

Postal Range: 18039~19067

16001

Butler

Postal Range: 16001~16066

15714

Cambria

Postal Range: 15714~16699

15832

Cameron

Postal Range: 15832~15861

18012

Carbon

Postal Range: 18012~18624

16677

Centre

Postal Range: 16677~16882

19301

Chester

Postal Range: 19301~19520

16028

Clarion

Postal Range: 16028~16375

15721

Clearfield

Postal Range: 15721~16881

16822

Clinton

Postal Range: 16822~17779

17814

Columbia

Postal Range: 17814~18631

16110

Crawford

Postal Range: 16110~16440

17001

Cumberland

Postal Range: 17001~17266

17005

Dauphin

Postal Range: 17005~17177

19008

Delaware

Postal Range: 19008~19373

15821

Elk

Postal Range: 15821~16734

16401

Erie

Postal Range: 16401~16565

15012

Fayette

Postal Range: 15012~15631

15828

Forest

Postal Range: 15828~16370

17201

Franklin

Postal Range: 17201~17272

15536

Fulton

Postal Range: 15536~17267

15310

Greene

Postal Range: 15310~15380

16611

Huntingdon

Postal Range: 16611~17264

15681

Indiana

Postal Range: 15681~16256

15711

Jefferson

Postal Range: 15711~15865

17014

Juniata

Postal Range: 17014~17094

18403

Lackawanna

Postal Range: 18403~18653

17022

Lancaster

Postal Range: 17022~19501

16101

Lawrence

Postal Range: 16101~16172

17003

Lebanon

Postal Range: 17003~17088

18011

Lehigh

Postal Range: 18011~18195

18201

Luzerne

Postal Range: 18201~18773

17701

Lycoming

Postal Range: 17701~17810

16333

Mckean

Postal Range: 16333~16750

16113

Mercer

Postal Range: 16113~16311

17002

Mifflin

Postal Range: 17002~17099

18058

Monroe

Postal Range: 18058~18610

18041

Montgomery

Postal Range: 18041~19525

17821

Montour

Postal Range: 17821~17884

18001

Northampton

Postal Range: 18001~18351

17017

Northumberland

Postal Range: 17017~17881

17006

Perry

Postal Range: 17006~17090

19019

Philadelphia

Postal Range: 19019~19255

18324

Pike

Postal Range: 18324~18464

16720

Potter

Postal Range: 16720~17729

17901

Schuylkill

Postal Range: 17901~19549

17812

Snyder

Postal Range: 17812~17882

15411

Somerset

Postal Range: 15411~15963

17731

Sullivan

Postal Range: 17731~18632

18413

Susquehanna

Postal Range: 18413~18847

16901

Tioga

Postal Range: 16901~17765

17829

Union

Postal Range: 17829~17889

16301

Venango

Postal Range: 16301~16374

16312

Warren

Postal Range: 16312~16436

15004

Washington

Postal Range: 15004~15483

18405

Wayne

Postal Range: 18405~18473

15062

Westmoreland

Postal Range: 15062~15954

18419

Wyoming

Postal Range: 18419~18657

17019

York

Postal Range: 17019~17408

📮US United States Regional Postal Code FAQ & Postal Regulations

📮 What is the format of a US ZIP code?

Standard format is 5 digits (e.g., 10001). Extended format is ZIP+4 (9 digits like 10001-1234) with a hyphen.

🔍 How to find the ZIP code for an address?

Use the USPS ZIP Code Lookup tool by entering the full address on the official USPS website.

⚠️ What happens if I use a wrong ZIP code?

Mail may be delayed, returned, or lost. For important documents, use USPS tracking and verify the ZIP code.

🔄 Do ZIP codes ever change?

Yes, USPS may update ZIP codes due to regional adjustments. Always confirm your ZIP code after an address change.

📦 Is a ZIP code required for international mail to the US?

Absolutely. Always include the US ZIP code at the end of the address (e.g., New York, NY 10001 USA).