The Postal Service has been publishing announcements about post office discontinuances in Postal Bulletin since 1880. The publication is the official record for post office changes. But not anymore.
In the September 8, 2022, issue of the Bulletin (page 10), in the section where recent discontinuances are normally listed, one finds the following note:
Due to the extensive number of offices on the Discontinuance List, the changes will not be published in this Postal Bulletin. Instead, the link at the end of this article will take you to a document which includes the Post Offices which have been suspended for years. Customers in these communities are being served by nearby offices.
The listings in this document represent the administrative action of the Postal Service™ officially closing these offices. To access the list of affected Post Offices, visit postalpro.usps.com/POB_22606.
This link to the PostalPro website goes to a list of 57 discontinuances that did not make it into Postal Bulletin simply because there were too many of them.