What is Carrier Routes Data?#

Carrier Routes are derived from address point locations served by postal delivery services, and are grouped by Census Blocks and Zip Codes to generate polygon service areas.

How often is Carrier Routes Data updated?#

Carrier Routes are updated on a quarterly basis, and is prepared in conjuction with our Melissa Address updates.

What data source does Carrier Routes Data use?#

Data sources used to derive Carrier Routes are Melissa Address points and US Census TIGER Block and State Boundaries.