The History of the ZIP Code

ZIP-(Zone Improvement Plan) Code Established in 1963, the system of 5-digit codes that identifies the individual post office or metropolitan area delivery station associated with an address. ZIP+4 is an enhanced code consisting of the 5-digit ZIP Code and four additional digits that identify a specific range of delivery addresses.

More useful ZIP Code links:

ZIP Code database tables for importing into Microsoft Access, Excel, Paradox, Oracle, etc. -

The ZIP Code Companion software for MS Windows.  A convenient tool for looking up ZIP Codes -

ZIP Code Distance Wizard - Quickly finds proximate ZIP Codes.  Enter a ZIP Code, a distance, and the Wizard will list all of the neighboring ZIP Codes within that radius distance.  Then export the list to CSV or Windows Clipboard.

USPS ZIP + 4 lookup -

Mr. ZIP - the wide-eyed mascot of postal efficiency!

Mister ZIP, Mr. ZIP, Mr ZIP, USPS ZIP Code history

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