A standard ZIP code has five digits, but the adds a hyphen and four extra numbers:
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 To-the-Fullest.zip
: Pinpoint a much smaller area, such as a city block , a specific apartment building , or even a single floor of a large high-rise. Why Use the Full ZIP? A standard ZIP code has five digits, but