USPS Acronyms & Abbreviations

Here's a list of abbreviations related to the USPS terminology and jargon:


Acronym

Definition

RLOReturn Letter Office
RMRoom
RORomania
RPWRevenue, Pieces, and Weight
RRRural Route
RSSerbia
RSCRigid Steel Container
RSVPReply Soon Via Post
RTRoute
RTAPSRural Time and Attendance Processing System
RURussian Federation
RWRwanda
S/SISSales/Service Information System
SASaudi Arabia
SAESelf-Addressed Envelope
SAMSpace Available Mail
SASWYBSemi-Automated Scan Where You Band
SBSolomon Islands
SBMStamps By Mail
SCSeychelles
SCFSectional Center Facility
SDSpecial Delivery
SDSide
SDSudan
SDOStamp Distribution Office


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