US United States Major Regions Postal Code Details
๐๏ธ Bremer ยท Iowa
50677
Artesian
50677
Bremer
50674
Buckcreek
50622
Denver
50647
Finchford
50631
Frederika
50677
Horton
50647
Janesville
50668
Klinger
50668
Knittel
50677
Murphy
50666
Plainfield
50668
Readlyn
50674
Sumner
50676
Tripoli
50677
Waverly
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).