The Einstein Center Population Diversity (ECPD) – Unfolding unequal life courses within diverse families in aging societies – is an interdisciplinary research hub based in Berlin, Germany. The research is carried out by a consortium of seven partner sites that will study the prerequisites and consequences of increasing population diversity for social inequality and health disparities. The specific focus will be on the growing diversity of families within the context of healthy aging, including changing conceptions and boundaries of the family itself.