US United States Major Regions Postal Code Details
๐๏ธ Jersey ยท Illinois
62028
Chautauqua
62022
Dow
62031
East Hardin
62028
Elsah
62030
Fidelity
62031
Fieldon
62037
Grafton
62052
Jersey
62052
Jerseyville
62063
Kemper
62052
McClusky
62063
Medora
62031
Nutwood
62052
Otter Creek
62037
Otterville
62037
Quarry
62031
Rosedale
62063
Summerville
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).