US United States Major Regions Postal Code Details
๐๏ธ Pulaski ยท Illinois
62996
America
62956
Boaz
62941
Grand Chain
62941
Hillerman
62956
Karnak
62964
Meridian Heights
62963
Mound City
62964
Mounds
62941
New Grand Chain
62964
North Mounds
62970
Olmsted
62973
Perks
62976
Pulaski
62964
Spencer Heights
62992
Ullin
62996
Villa Ridge
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).