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ZIP+4 Database

ZIP+4 Database

The United States Postal Service (USPS) added a 4-digit extension to the standard 5-digit ZIP Code (forming what is often called a 9-digit ZIP Code, or Simply ZIP+4) in the 1980's to facilitate mail sorting and delivery.  Since then, ZIP+4 databases have been used by organizations looking to add more precision to direct marketing efforts.

Most ZIP+4 Databases offered online are simply repackaged address-range lists from the USPS.  But the USPS data lacks important information for businesses looking for a comprehensive dataset to enable granular segmentation and geo-targeting capabilities.  Specifically, the majority of providers are missing unique ZIP+4 records and most of the latitude and longitude coordinates. To fill in these gaps, Maponics begins with the latest USPS data, leverages years of experience and uses proprietary algorithms to:   

  • Expand the ZIP+4 ranges into over 59 million unique records while removing duplicate records
  • Geocode each ZIP+4 code address range to tag each one with a geographic centroid point (lat/lon)

creating an ideal dataset for spatial applications.

Additional ZIP+4 Database Features

Unlike some ZIP+4 datasets available, the Maponics ZIP+4 database includes all data fields from the source USPS file as well as corresponding Census data, including state, county, tract, and block group codes.  The result is a comprehensive ZIP+4 database that can be used for everything from small area demographic analysis to effective micro-targeting campaigns.