The 1970 Census Users' Guide has been designed to serve data users as the principal resource for information about the 1970 Census of Population and Housing. Procedures for collecting and processing census data are complex; data products and services are numerous and greatly varied in their characteristics; terminology is often uniquely associated with census programs or tabulations. The Users' Guide furnishes the information which data users need in order to effectively deal with these and other potential barriers to understanding and using the census to best advantage.
Census statistics date back to 1790 and reflect the growth and change of the United States. Past census reports contain some terms that today’s readers may consider obsolete and inappropriate. As part of our goal to be open and transparent with the public, we are improving access to all Census Bureau original publications and statistics, which serve as a guide to the nation's history.