"Multigenerational households" refers to a living arrangement where multiple generations of a family, such as grandparents, parents, and children, live together in the same home. Full definition
The most recent data (from 2016), found «a record 64 million Americans live in multigenerational households.» (relevantmagazine.com)
Hawaii (8.2 percent), California (5.6 percent), and Mississippi (5.2 percent) had the three highest proportions of multigenerational households in the nation. (realtormag.realtor.org)
When housing prices were escalating rapidly, multigenerational households provided a buffer by first reducing the demand for housing and at the same time providing housing for seniors. (business.financialpost.com)