Figure 3: Circa 2010 High-resolution gridded population distribution presenting age structures for mainland Africa and Madagascar and the Asian region.
From: Sub-national mapping of population pyramids and dependency ratios in Africa and Asia

Estimates of young age population (0 to 14yrs) are in (a,c); estimates of working age population (15 to 65) are in (b,d). The grid cell resolution is 30 arc seconds (approximately 1 km at the equator) and coordinate reference system is GCS WGS 1984.