US United States Major Regions Postal Code Details
๐๏ธ Pennington ยท South Dakota
57719
Box Elder
57775
Cactus Flats
57725
Caputa
57780
Conata
57775
Cottonwood
57790
Creighton
57745
Deerfield
57790
Dowling
57791
Elm Springs
57725
Farmingdale
57791
Gumbo
57745
Hill City
57702
Hisega
57780
Imlay
57701
Jolly Acres
57751
Keystone
57745
Mystic
57761
New Underwood
57701
Old Town
57767
Owanka
57702
Pactola Lake
57775
Quinn
57702
Rapid City
57745
Rochford
57701
Rockerville
57780
Scenic
57702
Silver City
57761
Viewfield
57790
Wall
57791
Wasta
57767
Wicksville
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).