US United States Major Regions Postal Code Details
🏛️ Marin · California
94949Bel Marin Keyes
Bel Marin Keyes marin california 94949 United States
94920Belvedere
Belvedere marin california 94920 United States
94920Belvedere Tiburon
Belvedere Tiburon marin california 94920 United States
94945Black Point
Black Point marin california 94945 United States
94924Bolinas
Bolinas marin california 94924 United States
94925Corte Madera
Corte Madera marin california 94925 United States
94929Dillon Beach
Dillon Beach marin california 94929 United States
94930Fairfax
Fairfax marin california 94930 United States
94998Firemans Fund Ins
Firemans Fund Ins marin california 94998 United States
94933Forest Knolls
Forest Knolls marin california 94933 United States
94914Greenbrae
Greenbrae marin california 94914 United States
94949Ignacio
Ignacio marin california 94949 United States
94937Inverness
Inverness marin california 94937 United States
94904Kent Woodlands
Kent Woodlands marin california 94904 United States
94914Kentfield
Kentfield marin california 94914 United States
94938Lagunitas
Lagunitas marin california 94938 United States
94939Larkspur
Larkspur marin california 94939 United States
94965Marin City
Marin City marin california 94965 United States
94903Marinwood
Marinwood marin california 94903 United States
94940Marshall
Marshall marin california 94940 United States
94942Mill Valley
Mill Valley marin california 94942 United States
94915Mission Rafael
Mission Rafael marin california 94915 United States
94965Muir Beach
Muir Beach marin california 94965 United States
94941Muir Woods
Muir Woods marin california 94941 United States
94946Nicasio
Nicasio marin california 94946 United States
94949Novato
Novato marin california 94949 United States
94950Olema
Olema marin california 94950 United States
94956Point Reyes Station
Point Reyes Station marin california 94956 United States
94957Ross
Ross marin california 94957 United States
94960San Anselmo
San Anselmo marin california 94960 United States
94963San Geronimo
San Geronimo marin california 94963 United States
94945San Marin
San Marin marin california 94945 United States
94974San Quentin
San Quentin marin california 94974 United States
94912San Rafael
San Rafael marin california 94912 United States
94903Santa Venetia
Santa Venetia marin california 94903 United States
94966Sausalito
Sausalito marin california 94966 United States
94970Stinson Beach
Stinson Beach marin california 94970 United States
94941Strawberry Point
Strawberry Point marin california 94941 United States
94941Tamalpais Valley
Tamalpais Valley marin california 94941 United States
94903Terra Linda
Terra Linda marin california 94903 United States
94920Tiburon
Tiburon marin california 94920 United States
94971Tomales
Tomales marin california 94971 United States
94973Woodacre
Woodacre marin california 94973 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).
