University of Maryland
Sociology 441: Stratification 
graph top quintile share, 1950-2005

Other share trends:
Share of bottom quintile
Share of middle quintile
Gini index of inequality

Quintile ratios:
Ratio of top to bottom
Ratio of top to median
Ratio of median to bottom

Family income trends:
Bottom quintile
Median income
Top quintile


Sources: US Census Bureau, and

Consumer Population Reports, Series P60, P60-206, Money Income in the United States, 1998 or as pdf file (=2561K, needs Acrobat reader).

return to: Sociology 441 home page Sociology 441 list of figures

Last updated November 7, 2002
comments to: Reeve Vanneman.