Diversity and DisparitiesCensus information compiled at the portal describes the racial-ethnic diversity of U.S. states, metropolitan and micropolitan areas, counties, and places (e.g., cities, suburbs, small towns) for the 1980-2010 period. This information can be accessed in three ways. A summary measure of diversity (the entropy index), panethnic group counts and proportions, and simple compositional graphics are available on a case-by-case basis via pull-down menus.