Change we can believe in: More Young Adults Live With a Parent Than With a Spouse, Partner For the first time in more than 130 years of record-keeping, young adults in the United States are more likely living with mom and dad than they are living with a spouse or partner. Thirty-two percent of millennials adults aged 18-34 were living in their parents’ home in 2014, compared to 31.6 percent of millennials who live with a spouse or significant other, according to a new Pew Research Center… [ 129 more words. ]