One of the reasons for our focus on the 2020 Census is concern about efforts to find the hardest to count among the American population, generally residing in urban cores, rural areas, and native reservations. Such households may not have submitted their census questionnaire (self-response), making them "hard to count." Non-response followup to such households is particularly costly (in time and resources).

Where exactly do we "find" them? Thanks to the researchers at the Center for Urban Research of the City University of New York (CUNY) Graduate Center, with data from the Census Bureau, we now have a mapping system of the typical hard to count census tracts.