Introduction. Process of transition of fifteen countries of ex-member of the USSR from planned economy to market, was followed by basic changes in political, economic and social life of society. Various approaches to the undertaken reforms, and opposite strategic objectives, cause the distinctions of economies of the Post-Soviet countries observed now. Theoretical analysis. Works of many domestic scientists are devoted to a problem of the analysis of results of the period of transition of the Post-Soviet countries to market economy, they divide set of the Post-Soviet countries on the basis of various grouping signs, but along with advantages of these researches it is necessary to point to one essential shortcoming contributing a subjectivity share in the received results, it is high-quality approach to formation of groups. It causes need of application of quantitative approach and first of all multidimensional group. Empirical analysis. As a result of application to fifteen Post-Soviet countries of multidimensional group (more precisely than the cluster analysis) it has been established that in entire four reference periods (1991, 1999, 2009, 2015) three groups are allocated, at the same time in the last three periods a ratio and fullness of groups it is identical that points to stabilization of set. The first group had included the countries with impressive natural and human resources, the second the republics which have changed polarity from Russia with the European Union, the USA and China. The third group is formed by the Baltic States which were a part of the European Union and at the expense of it have considerably increased a separation from other Post-Soviet countries that is substantially shown in such indicator as GDP per capita. Conclution. Quarter of the century of development of the Post-Soviet countries out of the Soviet Union was led to their considerable deformation on the level of political and social and economic development. The republics which had good positions on the natural and human capital at the beginning of transition that it has allowed them to be integrated into global economy have achieved considerable progress. The Baltic States which were a part of the European Union and substantially, the improved macroeconomic indicators are also obviously allocated.