The United States Postal Service while delivering mail depends on more than just the 5 digits ZIP code. This use helps them to deliver the mails accurately and efficiently. They depend on ZIP Plus 4 database. This database adds more layers of information that helps businesses and organizations to enhance delivery rates, decrease cost and improve satisfaction of customers. However, it is wise to know what this database is and why it is critical for businesses to use it. 

What Is a ZIP Plus 4 Code?

There are 9 digits in this database and is in constant use by USPS to accurately identify a delivery location. The initial 5 digits is the normal ZIP code; however, the remaining 4digits let one know about information like city block, group of apartment, particular building or even a mailbox. 

For example, the ZIP Code 90210 might apply to a general area in Beverly Hills, but 90210-1234 might refer to a specific office floor within a commercial complex. This level of accuracy significantly reduces errors and improves mail sorting and delivery efficiency.

What Is the ZIP Plus 4 Database?

This database is a comprehensive dataset maintained by USPS that contains all ZIP+4 Codes currently in use, along with related address information. It is made available through USPS-certified vendors and is updated frequently to reflect new addresses, removed codes, or boundary changes.

The database typically includes:

Full ZIP+4 Codes

Street address ranges

City and state names

County names

Delivery point details

Carrier route numbers

This data can be delivered in formats like CSV, SQL, or through an API, depending on the vendor and intended use.

Why Is It Important for Businesses?

Businesses rely on this database for a variety of operational and marketing functions:

Address validation: Ensure that customer addresses are deliverable and formatted correctly.

Mailing discounts: Qualify for USPS bulk and automation postage discounts.

Delivery efficiency: Speed up order fulfillment and reduce returned mail.

Targeted marketing: Combine ZIP+4 data with demographic information for precise campaign targeting.

Where Can You Get the ZIP Plus 4 Database?

While USPS does not offer this database directly for public download, it licenses the data to certified vendors. These providers offer monthly or weekly updates and additional tools for integrating the data into your business systems.

The ZIP Plus 4 Database from ZIP-Codes.Com plays a critical role in modern address management. Whether you're a small business trying to send mail efficiently or a large enterprise running complex logistics or marketing operations, this database provides the accuracy and reliability you need. Investing in ZIP+4 data is a smart move for any organization looking to optimize delivery, reduce costs, and stay compliant with USPS mailing standards. Call 1 800 425 1169 to purchase and download this database. They make it possible to have the latest dataset.