This study is an attempt at theoretical substantiation, development and practical implementation of the methodology for systematizing the facts of socially responsible activities of city-forming companies in the territories of company towns in order to determine the prevailing type of socially responsible behavior and prerequisites for the involvement of business in meaningful work on the socio-economic development company towns. The theoretical framework of the work is formed by the concept of corporate social responsibility in the interpretation of A. Carroll and the R. Freeman’s stakeholder’s theory. The empirical basis of the study is the data on the totality of the facts of responsible behavior of the five largest Russian mining and chemical and mining and metallurgical holdings in the territories of their production sites located in the Murmansk region.