US United States Major Regions Postal Code Details
๐๏ธ Todd ยท South Dakota
57555
Hidden Timber
57555
Mission
57563
Okreek
57555
Olsonville
57566
Parmelee
57555
Pine Run
57570
Rosebud
57570
Rosebud Indian Reservation
57572
Saint Francis
57572
Spring Creek
57570
Yankton Indian Reservation
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).