Why does Rakuten.com add four digits to the end of my zip code?


Rakuten.com wants to make sure your order gets to your with the least amount of trouble. To help with that, we may suggest an additional 4 digits be added to your zip code when you enter an address.

These 4 digits, determined by the United States Postal Service (USPS), are added to help the shipper determine a more precise location for your delivery than a ZIP code can provide alone.

For more information about these additional digits, you can see USPS's website here.


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