ZIP+4 Code - The Purpose of Last 4 Digits of Zip Code | PostGrid

TABLE OF CONTENTS REQUEST A DEMO What are ZIP+4 Codes? If you have ever tried sending direct mail to someone, you have likely come across the term ZIP+4 code. The origin of the ZIP code dates back as far as 1963. It was introduced as a solution t…

source https://www.postgrid.com/zip-4-code/

source https://byronnoell.blogspot.com/2021/03/zip4-code-purpose-of-last-4-digits-of.html