Publisher Summary This chapter provides an overview on the Spatial Data Transfer Standard (SDTS) United States of America. This standard provides specifications for the organization and structure of digital spatial data transfer, definition of spatial features and attributes, and data transfer encoding. The purpose of the standard is to promote and facilitate the transfer of digital spatial data among dissimilar computer systems. This standard is for use in the acquisition and development of government applications and programs involving the transfer of digital spatial data between dissimilar computer systems. The chapter indicates that the Federal Information Processing Standard (FIPS) SDTS does not apply to the transfer of digital geocoded data files that are not intended to represent spatial entities as digital geographic or cartographic features. It applies when the transfer of digital spatial data occurs within and/or outside of the US Federal Government.