US United States Major Regions Postal Code Details
๐๏ธ Corson ยท South Dakota
57621
Bullhead
57634
Keldron
57642
Kenel
57639
Little Eagle
57642
Maple Leaf
57641
Mc Intosh
57642
Mc Laughlin
57645
Morristown
57658
Standing Rock
57657
Trail City
57658
Wakpala
57659
Walker
57660
Watauga
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).