What does the last for digits of a zip code after the dash mean? Like 54115-????

Answer 1

They narrow the zip code down to a more specific region.

In the 1950s you only needed to give the first 5 digits of your telephone number. The exchange letter and a four digit code. Then you had to give the entire number, now you have to include the area code because there are just too many people and a simple 7 digit phone number isn't enough information to make the connection.

The additional numbers in the zip code are intended for the same reason. The first 5 have now become your area code and the last four can narrow your location down to a street or even apartment complex. It just makes sorting the mail a lot easier.

Answer 2

A ZIP + 4 code uses the basic five-digit code plus an additional four digits to identify a geographic segment within the five-digit delivery area, such as a 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. Use of the plus-four code is not required except for certain presorted mailings.

The general (but not invariable) rule is that each box has its own ZIP + 4 code. The add-on code is often one of the following: the last four digits of the box number (e.g., PO Box 58001, Washington DC 20037-8001), zero plus the last three digits of the box number (e.g., PO Box 12344, Chicago IL 60612-0344), or, if the box number consists of fewer than four digits, enough zeros added to the front of the box number to make it a four-digit number (e.g., PO Box 52, Garrett Park MD 20896-0052). However, there is no uniform rule, so the ZIP + 4 code must be looked up individually for each box.

Answer 3

54115 Zip Code

Answer 4

I know my post code it's 6 letters and numbers.

Answer 5

That would be the routing number. It helps with deliveries. residents don't need to know it but people who ship things out of state must.

Answer 6

its usually the biz po box #
for faster delivery