[영문]Despite recent immigration from Africa and the Caribbean, Blacks in America are still viewed as a monolith in many previous studies. In this paper, we use newly released 2000 census data to estimate log-linear models that highlight patterns of interracial and intraracial marriage and cohabitation among African Americans, West Indians, Africans, and Puerto Rican non-Whites, and their interracial marriage and cohabitation with Whites. Based on data from several metropolitan areas, our results show that, despite lower socioeconomic status, native-born African Americans are more likely than other Blacks to marry Whites; they also are more likely to marry other Black ethnics. West Indians, Africans, and Puerto Rican non-Whites are more likely to marry African Americans than to marry Whites. Interracial relationships represent a greater share of cohabiting unions than marital unions. The majority of interracial unions, including native and immigrant Blacks, consist of a Black man and White woman. The implications for marital assimilation are discussed