US United States Major Regions Postal Code Details
๐๏ธ San Juan ยท Washington
98222
Anacortes
98222
Blakely Island
98243
Deer Harbor
98279
Doebay
98245
Eastsound
98250
Friday Harbor
98261
Lopez Island
98279
Olga
98280
Orcas
98261
Port Stanley
98250
Roche Harbor
98250
San Juan Island
98286
Shaw Island
98297
Waldron
๐ฎUS United States Regional Postal Code FAQ & Postal Regulations
๐ฎ 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.
๐ 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.
โ ๏ธ 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.
๐ Do ZIP codes ever change?
Yes, USPS may update ZIP codes due to regional adjustments. Always confirm your ZIP code after an address change.
๐ฆ 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).