Trace Zip Code Format For Free - Zip Format Form

Unknown, empty, or otherwise invalid integers are represented by 0. Zip codes will require leading zeros to correctly format 5-digit and zip-plus-4 codes. Zip-plus-4 notation using a plus-4 of all zeros (-0000) is not valid - use the 5-digit instead.

The zip code is a 5 digit number that sorts mail to an area typically served by a post office. Not all zip codes map to a single city, and not all cities have a single zip code. There can be four digits added to the zip code; this is called the zip+4.

It will still be delivered as long ass the rest of the address is correct. The USPS system corrects bad Zip Codes automatically by looking up the address in the database of all good addresses. We live in the 21st century and this is so easy for the computers to do now.

The first number in the code represents a general geographic area of the nation, ?0? in the East, moving to ?9? in the West. The next two numbers represent regional areas, and the final two identify specific Post Offices.

A 5-digit number that identifies a particular postal delivery area in the United States.

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.

The most complete ZIP Code is a nine-digit number consisting of five digits, a hyphen, and four digits, which the USPS describes by its trademark ZIP+4. The correct format for a numeric ZIP+4 code is five digits, a hyphen, and four digits.