Recent research suggests that about 70% of young adults ages 25–34 who live with their parents are employed. Realtor+1
If we use the figure of 25.2 million young adults living with their parents:
About 70% are employed.
That works out to roughly 17.6 million people.
One important point: "employed" includes both full-time and part-time workers. The report does not say that all 17.6 million have full-time jobs. Realtor
It's striking that many of these young adults are working yet still live with their parents. Researchers point to factors such as:
High housing costs and rents.
Student debt for some graduates.
Slower wage growth relative to housing costs.
A desire to save money for a home or other financial goals. Realtor+1