It is important to note that retired people are not employed. 31% of respondents were 60+ years old. Some chunk of the 18-29 year olds were likely full time stu

It is important to note that retired people are not employed. 31% of respondents were 60+ years old. Some chunk of the 18-29 year olds were likely full time students. There are also other people who can't or don't need to work. 4-5% unemployment rate captures something different from "do you have a job right now, yes/no?". There are also different "unemployment rates" that mean different things. FWIW, adults might live in homes owned by their spouse or child. It doesn't necessarily point to children living their parent's home.