US United States Major Regions Postal Code Details
๐๏ธ Colusa ยท California
95912
Arbuckle
95970
Codora
95912
College City
95932
Colusa
95979
Fouts Springs
95950
Grimes
95987
Leesville
95979
Lodoga
95955
Maxwell
95970
Princeton
95979
Sites
95979
Stonyford
95987
Wilbur Springs
95987
Williams
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).