This paper proposes an empirical investigation of a few outcomes of economic geography models. First, we intend to assess the role of the home market effect and of the level of transport costs on the outgoing trade flows. For this purpose we refer to a regional context looking at a chosen sample of European regions. In the second part, we focus on the analysis of the trade flows of a sample for Italian industrial districts. In addition, in this last part, attention is drawn to state the benefits that the common sharing of services provide to the firms that belong to a district, above all in terms of their international competitiveness.