The aim of this paper is to verify the methodology of measuring social capital in the research conducted by the representatives of territorial self-governments in the Wielkopolska region. The research was conducted in six intentionally selected powiats (administrative districts) of this Voivodeship; five compared and one comparative accepted as a model. The aim of this paper was achieved using the direct interview questionnaire method. Empirical data was compared using the statistical methods (correlation, classification, principal components) and comparative profiles and visualizations. The results of this analysis made it possible to confirm the usefulness of those methods in reaching the goal of this paper and to verify the working hypotheses. The implemented methods made it possible to: measure the level and structure of social capital; identify the size of social capital’s gap and identify the key attributes of social capital.