While not required for personal mail, using the full 9-digit code offers several technical benefits: ZIP+4 Code lookup | Get last 4 digits of 9-digit ZIP Codes
The phrase is likely a play on words referring to the ZIP+4 Code , also known as a 9-digit ZIP Code . Using a "full" ZIP code ensures your mail travels as efficiently—or "to the fullest"—as possible through the U.S. Postal Service . What is a "Full" ZIP Code? To-the-Fullest.zip
: Identify a specific delivery area or post office. While not required for personal mail, using the