"Living arrangements can affect family finances and well-being. Eighty-six percent of adults lived with other people, usually a spouse or a partner and frequently their children under age 18. More than half (52 percent) of all adults lived in a household with a spouse or partner or with a child under age 18 and with no one else. Other types of living arrangements were less common. Still, more than one-fourth of adults (28 percent) lived in a household that contains multiple generations of adults, meaning that the adult respondents either lived with their parents or adult children.

Older adults, and older women in particular, were the most likely to live alone. Twenty-one percent of adults age 65 or older lived alone, and 27 percent of women age 65 or older lived alone. In contrast, young adults were very likely to live with their parents. But this rate drops significantly for adults in their mid- and late 20s: 47 percent of 22- to 24-year-olds lived with their parents compared with 27 percent of 25- to 29-year-olds. Fewer adults in older age cohorts live with their parents: 13 percent of 30- to 44-year-olds live with their parents and 7 percent of 45- to 59-year-olds live with their parents. Conversely, the share living with a spouse or partner increased with age, from 26 percent of 22- to 24-year-olds to 52 percent of 25- to 29-year-olds."