US United States Major Regions Postal Code Details
🏛️ Humboldt · California
95511Alderpoint
Alderpoint humboldt california 95511 United States
95518Arcata
Arcata humboldt california 95518 United States
95524Bayside
Bayside humboldt california 95524 United States
95514Blocksburg
Blocksburg humboldt california 95514 United States
95525Blue Lake
Blue Lake humboldt california 95525 United States
95526Bridgeville
Bridgeville humboldt california 95526 United States
95528Carlotta
Carlotta humboldt california 95528 United States
95534Cutten
Cutten humboldt california 95534 United States
95502Eureka
Eureka humboldt california 95502 United States
95536Ferndale
Ferndale humboldt california 95536 United States
95537Fields Landing
Fields Landing humboldt california 95537 United States
95540Fortuna
Fortuna humboldt california 95540 United States
95542Garberville
Garberville humboldt california 95542 United States
95545Honeydew
Honeydew humboldt california 95545 United States
95546Hoopa
Hoopa humboldt california 95546 United States
95546Hoopa Valley Indian Reservat
Hoopa Valley Indian Reservat humboldt california 95546 United States
95547Hydesville
Hydesville humboldt california 95547 United States
95549Kneeland
Kneeland humboldt california 95549 United States
95550Korbel
Korbel humboldt california 95550 United States
95551Loleta
Loleta humboldt california 95551 United States
95526Mad River
Mad River humboldt california 95526 United States
95521Manila
Manila humboldt california 95521 United States
95521Mckinleyville
Mckinleyville humboldt california 95521 United States
95553Miranda
Miranda humboldt california 95553 United States
95554Myers Flat
Myers Flat humboldt california 95554 United States
95555Orick
Orick humboldt california 95555 United States
95556Orleans
Orleans humboldt california 95556 United States
95558Petrolia
Petrolia humboldt california 95558 United States
95559Phillipsville
Phillipsville humboldt california 95559 United States
95569Redcrest
Redcrest humboldt california 95569 United States
95560Redway
Redway humboldt california 95560 United States
95546Resighini Rancheria
Resighini Rancheria humboldt california 95546 United States
95562Rio Dell
Rio Dell humboldt california 95562 United States
95526Ruth
Ruth humboldt california 95526 United States
95564Samoa
Samoa humboldt california 95564 United States
95565Scotia
Scotia humboldt california 95565 United States
95589Shelter Cove
Shelter Cove humboldt california 95589 United States
95570Trinidad
Trinidad humboldt california 95570 United States
95571Weott
Weott humboldt california 95571 United States
95589Whitethorn
Whitethorn humboldt california 95589 United States
95573Willow Creek
Willow Creek humboldt california 95573 United States
📋 United States Address and Delivery Guidance
📮
Use a Complete Delivery Address:
Include the recipient name, building or street address, locality, region where applicable, postal code when the destination uses one, and the destination country or territory.
🌍
Follow Local Address Conventions:
Use the language, character set and address order requested by the recipient, official postal operator or carrier. Do not assume every destination uses the same postal-code format.
✅
Verify Before Dispatch:
Confirm the postal code, service coverage and any customs or carrier requirements with the recipient and the relevant official postal operator before shipping.
💡
Delivery Information Is Context-Specific:
Postal codes help routing only in territories that use them. Accurate recipient details remain essential for delivery in every destination.
Postal information, sources and verification
Use this page as a routing reference and confirm the complete address, postal code format and delivery restrictions with the relevant official postal operator or carrier before dispatch.
Editorial and service accountability
This postal-code reference is maintained by the 56ok.com logistics-content team for international shipping preparation. It is reviewed against publicly available postal-operator information; it is not an official postal authority and does not replace carrier or customs instructions.
This reference is maintained as postal and carrier information changes. Need a correction? Contact our team.
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📮United States Postal FAQ and delivery guidance
📮 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).
