4 ms·
In the United States your address is uniquely identified by an 11 digit number. This is your zip code, the +4 extension, and the last 2 digits of your house
by akira2501 2y ago
In the United States your address is uniquely identified by an 11 digit number. This is your zip code, the +4 extension, and the last 2 digits of your house number.
If you live on 123 Main Street, Schenectady, NY 12345-6789, then your address can be uniquely represented by 12345678923.
The post office also uses this system for sorting. That way the mail in the truck is in the correct order automatically.