The interdisciplinary study of human population is called

Demography is the study of human populations including their size structure growth distribution and changes over time. It uses methods from sociology economics geography and statistics. Governments rely on demographic data to plan for healthcare housing education and employment. For example population projections allow states to anticipate future needs in food and infrastructure. Cartography is the science of map making and biography is the story of an individual life while geography is the study of places and environments. Demography is unique because it focuses on human population as a whole.