AfriPop has produced detailed population distribution maps for Africa, freely available for download here in the GHDx and on the AfriPop Web site. The project, headed by Dr. Andrew Tatem and Dr. Catherine Linard, uses settlement maps derived from satellite imagery combined with land cover maps to reallocate spatial population count data. The population data primarily comes from censuses from 1993-2010, and are projected to 2010 using UN urban and rural growth rates. More details as to the methods and sources are available on the AfriPop Web site.