This research aims to estimate the causal effect of origin economic well-being on internal population migration using a time series of Colombian States between 2012 and 2019. The main contributions of this paper are three-fold. This analysis will provide a macro perspective of associations and causation between population dynamics and well-being in the current changes observed in Colombia. Likewise, it analyses the current image on internal migrants in Colombia (defined by five-years and one-year flows). On the methodological front, it extends the spatial interaction gravity models as proposed by LeSage and Pace (2008) and compares these methods with spatial regressions techniques using eigen spatial filtering as suggested by Chun (2008). Lastly, this study provides further empirical evidence on the so-called migration hump between development and internal migration, specifically in developing settings. The evidence for Colombia shows that the migration hump depends on the scale at which it is analyzed.