How processes of gentri®cation unfold, at what rate, and with what effects, can all differ substantially in different places. Although pre-existing theories have sought to encapsulate this diversity, the temporal and spatial limits of gentri®cation processes have yet to be fully explored. This paper postulates that population geographers have a role to play here. Firstly, researchers are urged to study gentri®cation within a broader temporal perspective, and to unravel connections between migration dynamics and population transitions over the course of the process. Secondly, it is contended that processes and effects of gentri®cation should be examined within wider spatial frameworks, whereby migration¯ows of relatively af¯uent households are evaluated within the context of (re)urbanisation, suburbanisation and counterurbanisation. This may pose important questions about the understandings of demographic links between gentri®cation and in-migrants at particular stages of their life-course. It is argued that this research agenda will require the adoption of more inclusive de®nitions of gentri®cation, embracing wider spatial and temporal criteria.