ZIP Code

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ZIP Code

Zoning Improvement Plan Code. A series of five numbers identifying the area of the United States in which to deliver mail. While some ZIP codes are reserved for post office boxes and single addresses receiving large volumes of mail, most identify the general area, such as the town or neighborhood, to which correspondence is addressed. They were introduced in 1963.

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Next, the NCOA licensee will run your lists against the NCOA file, correcting addresses and adding ZIP+4 codes where they're missing.

Depending on the quality of the list you're mailing to and the sophistication of your--or your lettershop's--mailing equipment, you can use delivery point barcodes or legible, properly formatted address blocks with ZIP+4 codes (which enable the Post Office to create the delivery point barcodes) and receive significant discounts.

Boost your mail's deliverability

Once this process is complete, addresses that were appended with ZIP+4 codes are now deliverable.

The database connection

Other vital information on the file includes carrier routes, delivery sequence numbers, ZIP+4 codes, vacancy codes, delivery type codes and seasonal codes.

Coming clean: dirty lists equal high postage; address hygiene is the answer

For example, once your list is clean and contains ZIP+4 codes, you can spray mail with delivery point barcodes, enabling the USPS to automate the handling of your mail.

From the list to the mail piece

This will verify ZIP information and insert ZIP+4 codes so that Delivery Point Barcodes can automatically be printed on the outgoing mailer during the address imaging process.