During the period of planned economies in Russia and Poland, services were underestimated as a sector of economic activity. To some degree, this continues to be the case. In spite of the existence of market economies in Central and Eastern Europe for more than 25 years, Russia and Poland should be categorized differently in terms of economic and social development. Based on D. Bell’s and his followers’ (M. Castells, A. Toffler, J. Rifkin, P. Drucker) theory of post-industrial society and post-industrial economy, Poland can be classified as a post-industrial country, while Russia is still an industrial country in many aspects. This point of view is based on global statistics and cross-country comparisons. The following statistical data has been used as a source for this research: share of services in GDP by country, contribution (value added) of seven main types of services to the respective GDP of Russia, Poland and other selected countries, value added and governmental expenditures per capita of primary services in aforementioned economies. The main differences between the Russian and Polish service sectors are indicated. The cases of Russia and Poland are presented here to highlight the key common features of Central and Eastern European countries’ tertiary sectors.