Maybe 30 is the new 20.
Data released this week from the Census Bureau show that 30-year-olds today — as compared to 30-years olds in 1975 — are less likely to have hit many of the milestones that have come to define adulthood. In 1974 three in four 30-year-olds had married, had a child, were not enrolled in school anymore and had lived on their own; in 2015, just one in three could say that.
Source: 4 charts that prove that today’s 30-year-olds are NOT adults – MarketWatch