US United States Major Regions Postal Code Details
๐๏ธ Jefferson ยท Iowa
52533
Abingdon
52533
Batavia
52556
Beckwith
52556
Fairfield
52635
Four Corners
52556
Glasgow
52567
Libertyville
52580
Limby
52635
Lockridge
52557
Maharishi University Of Mgmt
52556
Maharishi Vedic City
52580
Packwood
52580
Pekin
52556
Perlee
52556
Salina
52556
Vedic City
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).