The risks of poverty also have been increasing in recent decades, particularly among people ages 35-55, coinciding with widening income inequality. For instance, people ages 35-45 had a 17 percent risk of encountering poverty during the 1969-1989 time period; that risk increased to 23 percent during the 1989-2009 period. For those ages 45-55, the risk of poverty jumped from 11.8 percent to 17.7 percent.
Higher recent rates of unemployment mean the lifetime risk of experiencing economic insecurity now runs even higher: 79 percent, or 4 in 5 adults, by the time they turn 60.
By race, nonwhites still have a higher risk of being economically insecure, at 90 percent. But compared with the official poverty rate, some of the biggest jumps under the newer measure are among whites, with more than 76 percent enduring periods of joblessness, life on welfare or near-poverty.
By 2030, based on the current trend of widening income inequality, close to 85 percent of all working-age adults in the U.S. will experience bouts of economic insecurity.
"Poverty is no longer an issue of 'them', it's an issue of 'us'," says Mark Rank, a professor at Washington University in St. Louis who calculated the numbers. "Only when poverty is thought of as a mainstream event, rather than a fringe experience that just affects blacks and Hispanics, can we really begin to build broader support for programs that lift people in need."
The numbers come from Rank's analysis being published by the Oxford University Press. They are supplemented with interviews and figures provided to the AP by Tom Hirschl, a professor at Cornell University; John Iceland, a sociology professor at Penn State University; the University of New Hampshire's Carsey Institute; the Census Bureau; and the Population Reference Bureau.
Among the findings:
â¿¿For the first time since 1975, the number of white single-mother households living in poverty with children surpassed or equaled black ones in the past decade, spurred by job losses and faster rates of out-of-wedlock births among whites. White single-mother families in poverty stood at nearly 1.5 million in 2011, comparable to the number for blacks. Hispanic single-mother families in poverty trailed at 1.2 million.