39 CFR § 3021.10
Starting an appeal
November 6, 2020
(a) A Postal Service decision to close or consolidate a post office may be appealed only by a person served by that office. An appeal is commenced by submitting a Petition for Review to the Postal Regulatory Commission.
(b) The Petition for Review must state that the person(s) submitting it is/are served by the post office that the Postal Service has decided to close or consolidate. The petition should include the name(s) and address(es) of the person(s) filing it and the name or location of the post office to be closed or consolidated. A petitioner may include other information deemed pertinent.