US United States Major Regions Postal Code Details
๐๏ธ Jasper ยท Iowa
50208
Amboy
50028
Baxter
50054
Colfax
50232
Galesburg
50054
Goddard
50054
Green Castle
50127
Ira
50135
Kellogg
50137
Killduff
50208
Lambs Grove
50153
Lynnville
50168
Mingo
50170
Monroe
50208
Newton
50228
Prairie City
50232
Reasnor
50251
Sully
50054
Valeria
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).