Millennials trail Baby Boomers and Generation Xers in the number of households they head. But Millennial-run households represent the largest group in some key categories, such as the number in poverty or the number headed by a single mother.
For the first time since 1880, Americans ages 18 to 34 are more likely to be living with their parent(s) than in a household shared with a spouse or partner.
The number of Americans living in multi-generational households, which spiked during the Great Recession, has risen to a record 57 million in 2012, including about one-in-four young adults ages 25-34.