Jeff Allen is a cartographer and urban data scientist. He has an MA and PhD in Geography from the University of Toronto focusing on neighbourhood change, suburbanization of poverty, and transit accessibility in Canadian cities. He additionally holds a BASc in civil engineering, has worked as a data science and visualization consultant for public and non-profit organizations, and has published several academic journal articles and public reports. He has also taught courses and workshops in GIS, spatial analysis, urban geography, and transportation planning.