The goal of this paper is to present the changes of population structure in coal mining region. Such changes were born by the economic reforms. The study was based on the two typical coal mining regions in Russia and Ukraine. The correlation indicator was used in order to present the study results. The close attention was paid to the factors which reduce the migration. The most important changes were noted among workers in productivity age. They were the most willing to change the place of living and look for a job in other places and different sectors of the economy.