Data Files
Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACSLink®.

Release Notes
January 10, 2021 Release Notes (Change 7.0)

This document includes the January 10, 2021 releases below:

  • PostalOne! System Release (January Price Change 2021)
  • Enterprise Payment System (EPS) Release
  • Package Platform Release
  • Program Registration Release
  • Seamless Acceptance and Service Performance (SASP) Release
Fact Sheets
Full-Service Certified Mail Service Providers (MSP) Information Sheet

The list of certified MSPs is updated frequently. To ensure that you have the most current list of certified MSPs visit