Trends in U.S. Family Income Mobility, 1969–2006

Abstract: Much of America’s promise is predicated on economic mobility—the idea that people are not limited or defined by where they start, but can move up the economic ladder based on their efforts and accomplishments. Family income mobility—changes in individual families’ income positions over time—is one indicator of the degree to which the eventual economic wellbeing of any family is tethered to its starting point. In the United States, family income inequality has risen from year to year since the mid-1970s; given this rising cross-sectional inequality, changes over time in mobility determine the degree to which long-term income is also increasingly unequally distributed.