In 1983 the US Postal Service introduced an expanded Lafitte ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons", the basic 70067 Zip code and additional four digits to identify a geographic segment within the five-digit delivery area, such as a Lafitte city block, a group of apartments, an individual high-volume receiver of mail or each could use identifies that could use an extra identifying 33387 in efficient mail sorting; or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Louisiana.
In 1983, the U.S. Postal Service introduced an expanded Lafitte ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 70067 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Lafitte city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Louisiana.