No Zip Codes Required, Use Invokes Federal Jurisdiction, Use of the ZIP Code is voluntary. See Domestic Mail Services Regulations, Section 122.32. You should also know that the Postal service can not discriminate against the non-use of the ZIP Code. See "Postal Reorganization Act", Section 403, (Public Law 91-375).
Posted by Deleted (9e2476b2) at 2020-11-21 16:42:56 UTC