The new Demographic Science Unit (DSU) was launched on 1 August 2023 and is at the forefront of demographic research in Oxford and beyond. Based at Oxford Population Health and directed by Professor Melinda Mills, the unit is home to the Leverhulme Centre for Demographic Science and world-leading demographers. From biosocial, computational and geospatial demography, to inequality, climate and family, the unit leverages existing and new types of data, alongside innovative methods and unconventional approaches to tackle the most challenging demographic and population problems of our time. The unit’s interdisciplinary and demographic expertise are disrupting and realigning the study of demography for the benefit of populations around the world.