Assign Zip Code Bulletin For Free

Writing the wrong ZIP Code with the right address usually causes the letter to be delivered about a day later than if the ZIPCode were correct. As long as the mailing address is correct, the letter will be delivered.

This is because ZIP code boundaries are based on mail routes and delivery points rather than geographic factors. The U.S. Post Office Department, predecessor to USPS, developed a zoning address system in 1943 as a way to make sorting and delivery of mail easier.

A letter without a ZIP code may not reach its intended destination. That is because of the way addresses are read by automated postal systems. Rules that are taken for granted when people send mail are actually unusually strict to increase post office efficiency.

What happens if I use the correct zip code but wrong city on a piece of mail? The mail will first be routed by machine to the zipcode City. The Post Office receiving the mail will look at it and have to determine the correct city.

Usually what happens is a carrier or post master from the office where the package is sent will correct the zip code by looking at the address and even reach out to that particular post office to ensure the package is delivered to the correct address.

ZIP Codes? are an integral part of making sure your mailpiece is processed quickly and efficiently. Not having a ZIP Code? on your mail causes unnecessary delay because it will require manual look-up.

Summary. An incorrect address on a parcel can lead to delivery delays and items not getting delivered or lost. Making sure that the postcode on goods sent is correct is critical in ensuring delivery problems do not happen.