United States Major Regions Postal Code Details

US United States Major Regions Postal Code Details

🏛️ Alaska

99553

Aleutians East

Postal Range: 99553~99661

99546

Aleutians West

Postal Range: 99546~99692

99501

Anchorage

Postal Range: 99501~99695

99545

Bethel

Postal Range: 99545~99690

99613

Bristol Bay

Postal Range: 99613~99670

99704

Denali

Postal Range: 99704~99755

99555

Dillingham

Postal Range: 99555~99678

99701

Fairbanks North Star

Postal Range: 99701~99790

99827

Haines

Postal Range: 99827

99820

Hoonah Angoon

Postal Range: 99820~99841

99801

Juneau

Postal Range: 99801~99850

99556

Kenai Peninsula

Postal Range: 99556~99682

99901

Ketchikan Gateway

Postal Range: 99901~99950

99550

Kodiak Island

Postal Range: 99550~99697

99554

Kusilvak

Postal Range: 99554~99666

99623

Matanuska Susitna

Postal Range: 99623~99694

99659

Nome

Postal Range: 99659~99785

99721

North Slope

Postal Range: 99721~99791

99727

Northwest Arctic

Postal Range: 99727~99786

99830

Petersburg

Postal Range: 99830~99833

99918

Prince Of Wales Hyder

Postal Range: 99918~99927

99835

Sitka

Postal Range: 99835~99836

99840

Skagway

Postal Range: 99840

99731

Southeast Fairbanks

Postal Range: 99731~99780

99566

Valdez Cordova

Postal Range: 99566~99693

99903

Wrangell

Postal Range: 99903~99929

99689

Yakutat

Postal Range: 99689

99558

Yukon Koyukuk

Postal Range: 99558~99788

📮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).