For the first time since at least the Great Depression, a majority of young adults in the U.S. were living with their parents this year. Millions of Americans, especially young adults, moved in with family members as the coronavirus spread. In July, 52% of adults ages 18 to 29 were living with one or both parents, up from 47% in February, before the pandemic. The share of young adults living with their parents rose among men and women, in all major racial and ethnic groups and among metropolitan as well as rural residents. Growth was sharpest among the youngest adults – those ages 18 to 24 – as well as among White young adults.