Top-Down Population Mapping Method

This section outlines the methodological framework for the top-down population modelling approach developed by WorldPop to produce high-resolution gridded population estimates. The top-down approach begins with national or subnational population data, typically derived from censuses or administrative sources. These aggregate population figures are then spatially disaggregated across small geographic units, such as grid cells, using ancillary data that serve as proxies for population distribution.