This editorial introduction presents the papers published in this special issue of Annals of Economics and Statistics, which is the outcome of the first Migration and Development conference organized by EQUIPPE at the Faculté des Sciences Juridiques, Politiques et Sociales, Université Lille 2.

We analyse location of a group whose members differ in their preference ordering among sites while collective action calls for a common location. The possible locations are Pareto-efficient and individually rational outcomes of a cooperative game with strategic combinations defined by the...