Strengthening economic cohesion of regional economies is usually considered as one of the major goals of regional policy. At the same time, metropolitan cities are recognized as main centres of economic growth, influencing the development perspectives of more peripheral areas. It is therefore important to know the range and the mechanism of spillover of socio-economic development from metropolises to their surroundings, as well as to identify the areas which are economically lagging as a result of missing functional links with metropolises. The authors apply the local spatial correlation measures (local Moran’s statistics – LISA) in the analysis of municipal revenues in order to delimit the diffusion and polarization of economic development in Poland.