Mathias Lerch heads the Urban Demography Laboratory (URBDEMO) at the Faculty of Natural, Architectural and Build Environment (ENAC), Ecole polytechnique fédérale de Lausanne (EPFL). To improve understanding of urban population growth, Lerch has developed multi-disciplinary research interests in the components of demographic change (mortality/health, fertility and migration), as well as in their interactions with socioeconomic and environmental developments.
Before joining the EPFL, Lerch has acted as the deputy head of the Laboratory of Fertility and Well-Being at the Max Planck Institute for Demographic Research. He has analyzed and taught population change at various Swiss and German universities, as well as at statistical offices, often in transition countries. Since 2008, he has regularly advised national governments, United Nations entities, survey programs and NGOs on population issues and data collection.