Labeling List Changes Effective December 1, 2026

Effective December 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L004, L009, L010, L012, L015, L016, L201, L602, L605, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the December 1, 2026, effective date through January 31, 2027, expiration date. The changes will be published in the Postal Bulletin, Issue #22715.
 

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