While black-white parity has not yet been achieved in the United States, many gauges relating to economic and political empowerment have shown extraordinary convergence. But in the most intimate spheres of life – religion, residential location, marriage and cohabitation – far less convergence has occurred. In this paper, Roland G. Fryer, Jr. uses census data from 1880-2000 to analyze interracial marriage and uncovers a rich set of cross-section and time-series patterns.