Multicultural families are increasing in South Korea, and understanding their particular characteristics is crucial to integrating them into the majority. By exploiting a panel dataset of Korean immigrant families, the study focuses on the linkage between the national identity of parents and children, which plays a central role in Korean society. I find that parents’ strong Korean identity is positively related to children’s national identity as Koreans. In addition, I examine which underlying channels influence these relations, expecting that household income and the language mainly used provide the most substantial explanation for these results. The study suggests that the government should consider these socio-economic aspects when introducing relevant policies to integrate multicultural youth into Korean society.