In 1988, the typical American adult was 40 years old, white and married, with a high school diploma. If he was a man, he probably worked full time. If she was a woman, she probably didn’t.

Twenty-five years later, Americans are older, more diverse and more educated. We are less likely to be married and more likely to live alone. Work is divided more evenly between the sexes. One thing that hasn’t changed? The income of the median U.S. household is still just under $52,000.

The government’s release last week of income and poverty data for 2013 brought renewed attention to the apparent stagnation of the American middle class – not just since the financial crisis hit six years ago this month, but for much of the decade that preceded the crash. The report showed that the economic recovery has yet to translate into higher incomes for the typical American family. After adjusting for inflation, U.S. median household income is still 8 percent lower than it was before the recession, 9 percent lower than at its peak in 1999, and essentially unchanged since […]