US United States Major Regions Postal Code Details
๐๏ธ Crawford ยท Iowa
51520
Arion
51432
Aspinwall
51454
Botna
51448
Boyer
51528
Buck Grove
51439
Charter Oak
51441
Deloit
51442
Denison
51528
Dow City
51448
Kiron
51454
Manilla
51460
Ricketts
51461
Schleswig
51465
Vail
51467
Westside
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).