Modernizing Privacy Protections for the 2020 Census: Next Steps By Dr. John M. Abowd, Chief Scientist and Associate Director for Research and Methodology and Dr. Victoria A. Velkoff, Associate Director for Demographic Programs The world has evolved quite a bit since 1990, the last time we changed the way we protect individual responses in published census statistics. Back in the pre-Internet age, statistics were shared via floppy disk. Most people had to visit a library to look up census and other publicly available information. Today, that information is now freely available online. The amount of personal data about each of us, from commercial and public databases as well as social media, is massive and growing.  Census Bureau Releases Latest Privacy Protection Demonstration Data APRIL 28, 2021 — Today the U.S. Census Bureau released a new set of "demonstration data" to help the data user community evaluate the latest update to the new Disclosure Avoidance System that will protect published 2020 Census Public Law (P.L.) 94-171 Redistricting data. The demonstration data use previously released 2010 Census data to illustrate the impact of the latest iteration of the new system. As with previous censuses, the disclosure avoidance methods – also known as differential privacy – are not applied to the apportionment census counts. Metrics included in today's release show that the latest update meets or exceeds specialized accuracy targets based on use cases provided by the Department of Justice for the redistricting process and enforcement of the Voting Rights Act of 1965. | 
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