This article presents the results of a piece of research into extortion in the city of Palermo between 2004 and 2015. Highlighting the importance of the territorial context among the factors that explain the mafia phenomenon, the study draws on two different georeferencing databases: the first relating to the distribution of extortion across the Sicilian capital's various districts, and the second relating to the distribution of Palermo businesses that had joined the Addiopizzo anti-extortion movement. Although the empirical material is problematic, marked territorial variations emerge from a comparative analysis of the two databases, prompting a number of potential interpretations.