Over 20 years of geographic database analysis and development has been applied to the creation of accurate postal geographies. Network Analysis and Mathematical Graphing contribute to ZIPCodeMAPS' technology and process, eliminating the visual guessing and manual drawing used by older, less accurate methodologies.

• US Postal Service data is updated monthly
• The NAVTEQ street database is updated with complete ZIP+4 attribution of the street segment and sub-segments
• Network Analysis and Mathematical Graphing technology is used to validate and enhance this attribution
• The USPS CASS Certification data and process is used to validate the ZIP+4 attribution; exceptions are visually reviewed and resolved
• Proprietary processes create the boundaries that truly includes/encapsulates the Carrier’s walk and the ZIP Code
• The USPS CASS Certification data and process is again used to validate these boundaries; exceptions are visually reviewed and resolved
• The USPS, including local Postmasters, use our maps and confirm the results
• The boundaries are accurate and reflect the actual data…the appearance of “jagged lines crossing roads” accurately presents the Carrier Routes as defined by the USPS