A  B  C  D  E  F  G  H  I  L  M  N  O  P  Q/R  S  T  U/V  W  Y/Z Yard A classification, storage or switching area. Zone Express Zone: Districts established for establishing rates for express shipments. Also known as blocks. Parcel Post Zone: Areas used as bases for establishing parcel post rates. Time Zone: Districts that use the same time standard; e.g., Eastern, Central, Mountain, and Pacific Time Zones. Return to Top Home Journey Log Trade Topics People Profiles Index Ask the Eagle