Abstract
Annotation.The article presents a comprehensive analysis of the current ethnodemographic development trends in the Kostanay region.The basic problem of the study lies in identifying the impact of changes in the ethnic composition and migration processes on the socio-economic balance of the region.The relevance of the topic is determined by the growing ethnodemographic transformations in Kazakhstan, the restructuring of the labor force, and the need to enhance regional demographic and migration policies.The research employs statistical analysis, comparative-geographical methods, and demographic modeling.The key hypothesis states that the direction and intensity of ethnodemographic change directly influence regional social stability and economic capacity.The results show a steady increase in the share of the Kazakh ethnic group, while Slavic-origin populations have declined due to migration outflows.Intensifying urbanization and youth migration are reshaping the demographic structure of the region.The findings can be applied in developing regional ethnodemographic policies, improving migration management strategies, and adapting social development programs to the specific characteristics of the Kostanay region.