There are analyzed the methodology of bank system mapping that reflects the multidimensional approaches for the structure and operation of the facility. A systematic approach is supposed by which a series of maps showing the banking system of Ukraine as a complete system of linked spatial and temporal regularities placement, the formation of it, functionally-component, territorial and organizing structures. There are grounded and analyzed the using of system approach, its methods and principles used to elaborating of map series of Ukrainian bank system. The structure unity of Ukrainian bank system is revealed and analyzed the directions of system mapping of bank system and grounded the main principles of cartographic modeling. The system approach and system modeling create the theoretical and methodological bases of bank system mapping on the all stages of it investigation (information supply, maps creating and using). The map system must have coherent geographic bases, scale, single and united system of indicators to have the possibility to analyze and to compare the maps on each level. Keywords: thematic mapping, the banking system of Ukraine, a series of maps, methods of mapping, cartographic modeling.