US United States Major Regions Postal Code Details
๐๏ธ Pottawatomie ยท Kansas
66407
Belvue
66549
Blaine
66521
Duluth
66422
Emmett
66426
Fostoria
66432
Havensville
66547
Louisville
66520
Olsburg
66521
Onaga
66535
Saint George
66536
Saint Marys
66547
Wamego
66426
Westmoreland
66521
Wheaton
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).