The top 10 percent of earners in 117 metropolitan areas are more segregated from the rest of the population than families in the bottom 10 percent are, a new study shows.
Since 1970, middle‐income neighborhoods have been disappearing. In 2009, only 42 percent of families lived in middle‐income neighborhoods, compared with 65 percent four decades earlier, report researchers.
More than one third of all US families now live in affluent or poor neighborhoods—double the proportion in 1970. Increasing income inequality is one of the primary reasons for the growth of income segregation.
“As income inequality has grown in the last four decades, America has become increasingly spatially divided by income,” says Kendra Bischoff, assistant professor of sociology at Cornell University. “This trend has been more rapid in the last decade, but the direction of change has been evident for many years.”
“In 2010 the 10 percent of families with the highest incomes controlled approximately 46 percent of all income in the United States,” write Bischoff and coauthor Sean Reardon of Stanford University.
They note that “the increasing isolation of the affluent from low- and moderate-income families means that a significant proportion of society’s resources are concentrated in a smaller and smaller proportion of neighborhoods.”
Kids and jobs
The report analyzes changes in segregation in the 117 largest metropolitan areas in the United States. The findings indicate some of the causes of increasing income segregation:
- Most (70 percent) of the increase in segregation—and especially the increase in segregation of wealthy families—is due to increasing income inequality.
- Class segregation has grown more in areas with a growing percentage of children in the population. Where people are more concerned about opportunities for their children, there may be more incentive for affluent families to cluster in separate neighborhoods.
- Income segregation has risen particularly rapidly in areas where the manufacturing sector has declined. This is likely because manufacturing declines have reduced the middle class population in cities.
- The authors warn that the increasing isolation of the rich can affect other groups by reducing the shared stake in public resources and amenities that can benefit broad segments of the population, such as schools, parks, and public services.
“If advantaged families do not share social environments and public institutions with low-income families, they may be less likely to support investment in these shared resources. Such a shift in collective commitment to the public good may have far-reaching consequences for social inequality,” says Reardon.
“Income segregation” refers to the extent to which high- and low-income families within a metropolitan area live in the same neighborhoods.
The study is the result of analyzing 40 years of census data. It was just released by the US 2010 Project, a program of research on changes in American society in the recent past.
The Russell Sage Foundation and Brown University funded the US 2010 Project.
Source: Cornell University
