["Population and Development Review, Volume 47, Issue 3, Page 691-717, September 2021. ", "\nAbstract\nUsing census and survey microdata from 69 countries worldwide, in this paper we document levels of intergenerational coresidence over the life course and examine changes in recent decades. We present evidence of a generalized pattern of increase in intergenerational coresidence during the initial decade of this century. This is most evident among people aged 20–30 and, at least in regions such as Europe and North America and in Latin America and the Caribbean, affects women as much or more than it does men. Rates of increase are fastest in Asia (especially among men), robust in Europe and Latin America, and relatively slow in Africa. This shift is occurring in a variety of demographic, economic, and cultural contexts and appears to run counter to expectations that intergenerational coresidence would gradually decline with modernization and cultural change. We discuss the extent to which these results challenge existing interpretations of the role of the family in contemporary society.\n"]