The 2020 Census was the first Census that allowed people to provide their data online or by telephone.
It was only the 12th Census to be conducted during a presidential election.
The Census was conducted during one of the worst pandemics in modern history (the 1918 Spanish flu epidemic was winding down by 1920).
It was the first Census to allow white and Black people to elaborate on their race. Previously, only the Asian, Pacific Islander, Native American, and Hispanic communities had been allowed to specify their origins.
Its PL94-171 results, used for redrawing voting boundaries, were made available in one release. Previously, releases were made in groups of five or fewer states over a period of weeks.