The theoretical part of Master’s paper defines the essence of differentiation of population’s income and the problem of its optimality. A system of indexes measuring the differentiation of income was created, the relation of inequality of income and economical growth was defined and social consequences of growing differentiation of income was evaluated. A comprehensive analysis of notion of poverty was carried out, the relation between inequality of income and poverty was evaluated and drawbacks of criteria for poverty assessment were revealed. A model system of income redistribution was created, essential means of reducing income inequality and poverty as well as the problem of their efficiency were distinguished and trends of improving the redistribution system were defined. In the practical part of Master’s paper a consistent analysis of the level, dynamics and structure of the average disposed income was carried out and differences of income between the social groups of residents were identified. Comparing city and village households assessed the scope of income differentiation. A prognostication of the size of average disposed income was performed and the relation of income and other economical indices was assessed. The formulated hypotheses of the scientific research were proven. First, the structure and dynamics of income has significant differences between the social groups of residents. Second, the scope of differentiation of income in city and village households is... [to full text]