United States Major Regions Postal Code Details

US United States Major Regions Postal Code Details

🏛️ Illinois

62301

Adams

Postal Range: 62301~62376

62914

Alexander

Postal Range: 62914~62993

62086

Bond

Postal Range: 62086~62284

61008

Boone

Postal Range: 61008~61065

62353

Brown

Postal Range: 62353~62378

61312

Bureau

Postal Range: 61312~61379

62006

Calhoun

Postal Range: 62006~62070

61014

Carroll

Postal Range: 61014~61285

62611

Cass

Postal Range: 62611~62691

60949

Champaign

Postal Range: 60949~61880

62083

Christian

Postal Range: 62083~62570

62420

Clark

Postal Range: 62420~62477

62434

Clay

Postal Range: 62434~62899

62215

Clinton

Postal Range: 62215~62293

61912

Coles

Postal Range: 61912~62469

60004

Cook

Postal Range: 60004~60827

62413

Crawford

Postal Range: 62413~62478

62428

Cumberland

Postal Range: 62428~62468

61727

Dewitt

Postal Range: 61727~61882

61910

Douglas

Postal Range: 61910~61956

61917

Edgar

Postal Range: 61917~61955

62476

Edwards

Postal Range: 62476~62833

62401

Effingham

Postal Range: 62401~62473

62011

Fayette

Postal Range: 62011~62885

60919

Ford

Postal Range: 60919~61773

62812

Franklin

Postal Range: 62812~62999

61415

Fulton

Postal Range: 61415~61563

62867

Gallatin

Postal Range: 62867~62984

62016

Greene

Postal Range: 62016~62098

60407

Grundy

Postal Range: 60407~60479

62817

Hamilton

Postal Range: 62817~62860

61450

Hancock

Postal Range: 61450~62380

62919

Hardin

Postal Range: 62919~62982

61418

Henderson

Postal Range: 61418~61480

61233

Henry

Postal Range: 61233~61490

60911

Iroquois

Postal Range: 60911~60974

62901

Jackson

Postal Range: 62901~62994

62432

Jasper

Postal Range: 62432~62481

62810

Jefferson

Postal Range: 62810~62898

62022

Jersey

Postal Range: 62022~62063

61001

Jo Daviess

Postal Range: 61001~61087

62909

Johnson

Postal Range: 62909~62995

60109

Kane

Postal Range: 60109~60568

60901

Kankakee

Postal Range: 60901~60969

60512

Kendall

Postal Range: 60512~60560

61401

Knox

Postal Range: 61401~61572

60470

La Salle

Postal Range: 60470~61373

60002

Lake

Postal Range: 60002~60099

62417

Lawrence

Postal Range: 62417~62466

60530

Lee

Postal Range: 60530~61378

60420

Livingston

Postal Range: 60420~61775

61723

Logan

Postal Range: 61723~62671

61756

Macon

Postal Range: 61756~62573

62009

Macoupin

Postal Range: 62009~62690

62001

Madison

Postal Range: 62001~62294

62801

Marion

Postal Range: 62801~62893

61369

Marshall

Postal Range: 61369~61570

61532

Mason

Postal Range: 61532~62682

62908

Massac

Postal Range: 62908~62960

61411

Mcdonough

Postal Range: 61411~62374

60012

Mchenry

Postal Range: 60012~60180

61701

Mclean

Postal Range: 61701~61799

62613

Menard

Postal Range: 62613~62688

61231

Mercer

Postal Range: 61231~61486

62236

Monroe

Postal Range: 62236~62298

62015

Montgomery

Postal Range: 62015~62572

62601

Morgan

Postal Range: 62601~62695

61914

Moultrie

Postal Range: 61914~61951

60113

Ogle

Postal Range: 60113~61091

61451

Peoria

Postal Range: 61451~61656

62238

Perry

Postal Range: 62238~62997

61813

Piatt

Postal Range: 61813~61936

62312

Pike

Postal Range: 62312~62370

62928

Pope

Postal Range: 62928~62947

62941

Pulaski

Postal Range: 62941~62996

61326

Putnam

Postal Range: 61326~61560

62217

Randolph

Postal Range: 62217~62297

62419

Richland

Postal Range: 62419~62868

61201

Rock Island

Postal Range: 61201~61299

62059

Saint Clair

Postal Range: 62059~62289

62917

Saline

Postal Range: 62917~62987

62515

Sangamon

Postal Range: 62515~62796

61452

Schuyler

Postal Range: 61452~62681

62610

Scott

Postal Range: 62610~62694

61957

Shelby

Postal Range: 61957~62571

61421

Stark

Postal Range: 61421~61491

61013

Stephenson

Postal Range: 61013~61089

61534

Tazewell

Postal Range: 61534~61759

62905

Union

Postal Range: 62905~62998

60932

Vermilion

Postal Range: 60932~61883

62410

Wabash

Postal Range: 62410~62863

61417

Warren

Postal Range: 61417~61478

62214

Washington

Postal Range: 62214~62877

62446

Wayne

Postal Range: 62446~62895

62820

White

Postal Range: 62820~62887

61037

Whiteside

Postal Range: 61037~61283

60401

Will

Postal Range: 60401~60586

62841

Williamson

Postal Range: 62841~62974

61016

Winnebago

Postal Range: 61016~61132

61516

Woodford

Postal Range: 61516~61771

📮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).