US United States Major Regions Postal Code Details
๐๏ธ Madison ยท Illinois
62001
Alhambra
62002
Alton
62010
Bethalto
62060
Cloverleaf
62234
Collinsville
62018
Cottage Hills
62021
Dorsey
62025
Dunlap Lake
62060
Eagle Park
62024
East Alton
62026
Edwardsville
62010
Fort Russell
62034
Glen Carbon
62035
Godfrey
62040
Granite City
62249
Grantfork
62046
Hamel
62048
Hartford
62249
Highland
62025
Holiday Shores
62001
Kaufman
62058
Livingston
62234
Lumaghi Heights
62060
Madison
62061
Marine
62062
Maryville
62040
Mitchell
62067
Moro
62074
New Douglas
62060
Newport
62040
Pontoon Beach
62097
Prairietown
62024
Rosewood
62084
Roxana
62281
Saint Jacob
62087
South Roxana
62026
Southern Illinois University
62234
State Park Place
62294
Troy
62090
Venice
62095
Wood River
62097
Worden
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).