Young cities of Irkutsk area against the general demographic processes in Siberian region

The article opens features of formation and change of demographic structure of the young cities of Eastern Siberia during the Soviet and post Soviet period on an example of the cities of Irkutsk region. The factors of the natural increase and health of the population, processes of migration, particularities of ecological situation in the towns and track record to number of the population in them are represented on the background of the general demographic processes in Irkutsk region and Siberian federal county. The author points to the importance of fastening of the significant number of the constant population in Siberia both in social-economic, and in geopolitical area, and calls to pay attention to demographic regional policy.