Frankenfeld CL, et al. - Researchers assessed all-cause mortality in relation to residential racial composition, diversity, and segregation in the Mortality Disparities in American Communities (MDAC) study, which represents a record linkage of the nationally representative American Community Survey (ACS) with the National Death Index (NDI). For black race as minority and non-Hispanic white as majority populations, they calculated census county-level segregation estimates for exposure (isolation and interaction) and evenness (dissimilarity). Findings demonstrated the association of residential segregation and diversity, with mortality in the US population. The positive relation of all-cause mortality to dissimilarity and interaction; and its inverse association with isolation, black percentage and racial diversity was observed in all individuals (all races combined). Black individuals exhibited a positive association of all-cause mortality with dissimilarity, isolation, black percentage and racial diversity; and an inverse relation of all-cause mortality to interaction.