Geography: World Population - Collecting the data

It's important for countries to have an accurate population figure. Governments need to know not just how many people there are but how old they are, where they live and the kind of work they're doing. This helps governments to plan health and education services, future housing needs and so on. Most use a census (usually every 10 years) to count their population.

Each country faces different challenges in collecting this data and the quality of…