To better understand spatial concentration of logistics establishments, this paper analyzes location dynamics in relation to spatial clusters. Such an analysis is relevant for both decision makers within logistics ??rms and regional policy makers, as both co-located logistics ??rms as well as society as a whole can bene??t from co-location of logistics ??rms. For this analysis, longitudinal empirical data on logistics establishments in a Dutch province are used. Six general conclusions are drawn on spatial concentration over time and location decisions of logistic ??rms in relation to spatial concentration in logistics as well as the proximity to intermodal terminals. First, logistics employment spatially concentrates in particular areas, called Absolute and Relative Concentration areas (AREC areas). Second, logistics establishments that relocated within the province locate relatively more in AREC areas than in other areas; new logistics establishments do not. Third, larger logistics establishments locate relatively often in AREC areas. Fourth, logistics establishments that came from AREC areas are more likely to relocate in AREC areas than establishments that came from non-AREC areas. Hence, experience matters in location decisions of logistics establishments. Fifth, transport establishments locate relatively often in newly formed AREC areas. Finally, data on employment growth show that intermodal container terminals attract logistics employment, in their direct vicinity as well as on a municipal level.