An official website of the United States government                

----

end of header

# History

###### You are here: Census.gov ›  History ›  Reference › Privacy & Confidentiality › Privacy and Confidentiality

Skip top of page navigation

                - History Main
                - Agency History                    - Director Biographies
                  - Census Facilities
                  - Suitland, MD
                  - Notable Alumni
                - Innovations                    - Data Collection
                  - Technology
                - Programs                    - Agriculture
                  - Demographic
                  - Housing
                  - Economic
                  - Geography
                  - Governments
                - Through the Decades                    - Fast Facts
                  - Overview
                  - Index of Questions
                  - Questionnaires
                  - Census Instructions
                - Genealogy                    - Decennial Census Records
                  - Other Resources
                - Reference                    - Data@Museums
                  - Artifacts
                  - Lesson Plans
                  - Legislation
                  - Maps
                  - Oral Histories
                  - Privacy & Confidentiality
                  - Apportionment
                  - Publications 
                - Home Page Archive                    - 2024
                  - 2023
                  - 2022
                  - 2021
                  - 2020
                  - 2019
                  - 2018
                  - 2017
                  - 2016
                  - 2015
                  - 2014 
                - FAQs                    - Genealogy
                  - Agency History
                  - Demographic
                  - Economic
                  - Governments
                  - Agriculture
                  - Geography
                  - Innovations
                  - Miscellaneous

### Privacy & Confidentiality

### Also in this Section:

                          - Title 26, U.S. Code
                          - Title 13, U.S. Code
                          - Privacy and Confidentiality

View larger (277KB PDF)A History of Census Privacy Protections

## Privacy and Confidentiality

The strong culture of confidentiality at the Census Bureau has grown and evolved over time, shaped by a growing sense of a right to privacy among the people of the United States. The final result of this build-up is the confidentiality protections that are codified in Title 13 of U.S. Code, the rules governing Census Bureau activity today.

This was not always the case. Early census questionnaires were public; the authorizing legislation for the 1790 census actually required that they be posted in a public place so that people could check the accuracy of their entry.  Throughout the nineteenth century, the director of the census was informally entrusted with ensuring the confidentiality of both companies and individuals responding to the survey, but by the early twentieth century, presidential proclamations formally recognized the need for privacy.

During World War I and World War II, changes in federal law led to the roll-back of many protections on Census Bureau data.  After each war, these privacy protections were restored.

The Census Bureau produced a monograph on Privacy and Confidentiality [PDF 1.61 MB] in July 2001.

For a chronologically arranged table, see Events in the Chronological Development of Privacy and Confidentiality at the U.S. Census Bureau. [PDF 680 KB]

Working papers related to statistical safeguards and disclosure avoidance can be found at the Disclosure Avoidance Working Papers Web site.

  This symbol  indicates a link to a non-government web site.  Our linking to these sites does not constitute an endorsement of any products, services or the information found on them. Once you link to another site you are subject to the policies of the new site.

CONNECT WITH US**********

                            - Information Quality
                            - Data Linkage Infrastructure
                            - Data Protection and Privacy Policy
                            - Accessibility
                            - FOIA
                            - Inspector General
                            - No FEAR Act
                            - U.S. Department of Commerce
                            - USA.gov

----

Measuring America's People, Places, and Economy

Is this page helpful?
YesNo

NO THANKS

255 characters maximum255 characters maximum reached

Thank you for your feedback.Comments or suggestions?