If you are looking for information on a specific location, here is context on how U.S. ZIP Codes are structured and how to find the one you need: Understanding the ZIP Code System
: If the number refers to an international location, it would be considered a Postal Code . You can check international formats through the Universal Postal Union (UPU). Potential Similar Codes
: Enter a street address on the USPS ZIP Code Lookup to find the exact 5-digit or 9-digit code.
The was introduced by the USPS in 1963 to improve mail sorting and delivery speed. Each digit in a ZIP code serves a specific purpose: