The United States Census Bureau will use differential privacy with the 2020 census data results as part of their ongoing commitment to individual privacy.
Over the decades, the Census Bureau has used a variety of methods to keep individual census responses. The image below shows the historical changes to privacy protections.
2020 Disclosure Avoidance System: Frequently Asked Questions (links to external Census Bureau site)
2020 Disclosure Avoidance System Updates (links to external Census Bureau site)