Besides the pattern of distribution of the basic extensive characteristics reflecting the actual health status of the Chukotka and Magadan district population, adequate mathematical models describing the time course of some of the examined demographic processes were developed in the course of a comprehensive study of the health parameters and demographic structure of the population of the North-Eastern Russia. A prediction of the situation up to the year 2015 was made, using these models. Ranging of the natural and social factors by their influence on the health status and demographic parameters of the Extreme North was carried out.