Crude and standardized measures of the occupational differentiation of Negroes and whites are reported for each of the United States. The standardized measure eliminates the influence of the occupational structure on the amount of differentiation. Although there is considerable variation in the crude measure from state to state, the differences are not consistent with what is generally believed about racial differentiation in the United States and its connection with prejudice. The standardized measures show that a substantial amount of the differences among states is due to variation in occupational structure.