The Census Bureau recently released their “Detailed Operational Plan for the Post-Enumeration Survey (PES) Operations” for the 2020 Census. The PES is how the Bureau judges how well they did in a decennial headcount.
According to the plan, “The PES is an interrelated set of operational activities intended to allow the Census Bureau to evaluate coverage of the 2020 Census and provide data to improve future censuses. The Census Bureau conducts the PES to measure the coverage of housing units and people residing in housing units in the 2020 Census.”