US United States Major Regions Postal Code Details
๐๏ธ Knox ยท Maine
04862
Appleton
04847
Camden
04563
Cushing
04547
Friendship
04847
Hope
04645
Isle Au Haut
04851
Matinicus
04853
North Haven
04854
Owls Head
04855
Port Clyde
04841
Rockland
04856
Rockport
04860
Saint George
04858
South Thomaston
04859
Spruce Head
04645
Stonington
04860
Tenants Harbor
04861
Thomaston
04862
Union
04863
Vinalhaven
04864
Warren
04574
Washington
04865
West Rockport
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).