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City/State/ZIP Code Associations Find the ZIP Code for an area of a city or town, or the location of a given ZIP Code. ZIP+4 Code Lookup We make it simple. Enter an address and receive the ZIP+4 code.
Look Up a ZIP Code. ™. Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™. Enter city and state to see all the ZIP Codes ™ for that city. Enter a ZIP Code ™ to see the cities it covers. result does not confirm that a person or company is at that address. If you searched for a company and did ...
A ZIP+4 Code is a 4-digit code appended to a standard 5-digit ZIP that helps the USPS sort, route, and deliver mail more efficiently. The last 4 digits of these 9-digit ZIP Codes usually represent 6-20 delivery points on a USPS carrier route.
Even though they all mean the same thing, The U.S. Postal Service refers to these numbers as the "ZIP +4 Code". To determine a ZIP +4 Code you will need to know an address. The last four digits are not specific to a city but to a street address or Post Office Box.
The ZIP+4 code is not required, but it aids the post office in additional sorting of mail. A ZIP+4 code may correspond to a city block, group of apartments, or an individual high-volume receiver. It is also common for each PO Box number to correspond to a unique ZIP+4 code.
Find out how to use the 4-digit ZIP code extension to ensure faster and more accurate mail delivery by the USPS. Search by address, city, or ZIP code range.
Validate a United States postal address instantly in your browser with our free demo web tool with USPS Certified Address Validation.
ZIP+4 codes, also known as Plus-Four codes, ZIP code extensions, 9 digit ZIP codes, extended ZIP codes, or full ZIP codes, are four-digit codes that are appended to the traditional five-digit USPS ZIP codes.
The United States Postal Service maintains a database of US addresses with ZIP+4 codes which can be used for address lookup and validation.
ZIP+4™ is the US Postal Service’s extended ZIP code format that includes an additional four digit code. The four extra numbers in the extended ZIP code represent specific delivery routes within the delivery area.