POLL: Do you use the 5-digit or 9-digit ZIP code format when sending stuff?

Electrode

Diamond Member
May 4, 2001
6,063
2
81
As almost everyone now knows, US ZIP codes now have a 4-digit extension. However, in all the deals I've done in FS/FT, I do not believe anyone has ever given me their full 9-digit code (i.e. 12345-6789 instead of 12345) when they send me their address.

The poll is simple: When putting your return address on something, or giving someone your address, do you use the extension or not? If not, do you even know it?

Vote, and perhaps discuss.
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
I'll use the extension if I know it.

Most people don't bother, so I don't either.
 

Syringer

Lifer
Aug 2, 2001
19,333
2
71
I always put it for my return address for the heck of it. And if I know the delivery address's 4 digit extension I use it too.
 

McMadman

Senior member
Mar 25, 2000
938
0
76
I don't even know what my 9 digit is, I've seen at least 3 different last 4 numbers in a xxxxx-xxxx piece of mail.
 

ZIP+4 is so much better than just a ZIP. If something can't be read by the scanning machines at the PO, a ZIP+4 WILL get your mail delivered no matter what.

I always put my ZIP+4 on all mail I send. I also give it to any online store/person who's sending me stuff.

From the USPS (I love automation, this is fascinating stuff for me):

Q. Why are ZIP+4 Codes used?
A. In 1983, the Postal Service began using an expanded ZIP Code called "ZIP+4." A ZIP+4 Code consists of the original 5-digit ZIP Code plus a 4-digit add-on code. The 4-digit add-on number identifies a geographic segment within the 5-digit delivery area, such as a city block, office building, individual high-volume receiver of mail, or any other unit that would aid efficient mail sorting and delivery. Use of the 4-digit add-on is not mandatory, but it helps the Postal Service direct mail more efficiently and accurately because it reduces handling and significantly decreases the potential for human error and possibility of misdelivery. It also will lead to better control over USPS costs and, in turn, postage rate stability. ZIP+4 is intended for use primarily by business mailers who prepare their mail with typewritten, machine-printed, or computerized addressing formats that can be read by the Postal Service's automated scanners during processing. Mailers who qualify receive a rate discount on First-Class, non-presorted, ZIP+4 mailings of at least 250 pieces and on presorted ZIP+4 mailings of at least 500 pieces. There are also ZIP+4 discounts for bulk business mail.