From the Georgetown Center on Poverty and Inequality’s Census Resource Hub:

The Census Bureau is modernizing its confidentiality protections for census responses. At the heart of this new approach is a mathematical definition of confidentiality called “differential privacy.” This fact sheet—published jointly with Data & Society and The Leadership Conference on Civil and Human Rights—provides a brief and limited introduction to differential privacy, outlines the implications of the changes for data users, and encourages stakeholders to provide feedback to the Census Bureau.