US United States Major Regions Postal Code Details
๐๏ธ Trinity ยท California
96010
Big Bar
95527
Burnt Ranch
96024
Douglas City
96041
Hayfork
96048
Helena
96046
Hyampom
96048
Junction City
96052
Lewiston
95552
Mad River
96041
Peanut
95563
Salyer
96091
Trinity Center
96093
Weaverville
95595
Zenia
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).