What are the 4 extra digits of a ZIP Code?
So what do the extra numbers mean? These last 4 digits represent specific delivery routes within delivery areas. This extra detail means an even more precise matching to a more granular level. It could represent a handful of houses on one side of a street, or even a single building that receives a high volume of mail.
Why use zip 4?
ZIP+4 Codes indicate small geographic areas. By adding a ZIP+4 to what you mail, the USPS instantly knows the date, time, and carrier that will place your letter in the mailbox. The USPS will also immediately knows every truck, airplane, and facility theyll use along the way.
Can ZIP Codes be duplicated?
There are no duplicate ZIP Codes. There are some ZIP Codes that are multi-part polygons, but those polygons are usually adjacent.
Is A zip code Unique?
Since all that mail is distributed internally, the USPS and our services by extension will mark every address with a unique ZIP code as valid and deliverable.
Will mail arrive with wrong zip code?
If the address includes the correct street name and number as well as city and state, it will get delivered to the correct address. This is a common thing postal workers see every day and we know how to handle it. The incorrect zip code may delay the letter or package a day or two but it should get there.
What does it mean when it asks ZIP+4?
Your ZIP+4 is a basic five-digit code with four digits added as an extra identifier. It helps 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 a post office box.
Does ZIP 4 make a difference?
The correct ZIP+4 decreases the number of times a piece of mail is handled, too. This means that misdelivery or error is docHubly reduced as a result. Since ZIP+4 codes are based on delivery routes, this information can change as frequently as once every two months.
Will post office deliver mail with wrong ZIP Code?
Almost 25% of all mailpieces have something wrong with the address -- for instance, a missing apartment number or a wrong ZIP Code. Can some of those mailpieces get delivered, in spite of the incorrect address? Yes. But it costs the Postal Service time and money to do that.
Which states have 4 digit zip codes?
What Is a ZIP Code, and How Do ZIP Codes Work? ZIP Codes Beginning WithStates / Territories4Indiana, Kentucky, Michigan, Ohio5Iowa, Minnesota, Montana, North Dakota, South Dakota, Wisconsin6Illinois, Kansas, Missouri, Nebraska7Arkansas, Louisiana, Oklahoma, Texas6 more rows
Why are there 4 digits after ZIP Code?
So what do the extra numbers mean? These last 4 digits represent specific delivery routes within delivery areas. This extra detail means an even more precise matching to a more granular level. It could represent a handful of houses on one side of a street, or even a single building that receives a high volume of mail.