Global Population Statistics
Welcome to GeoHive, a site with all kinds of statistics.
The main component is tabulated population statistics: current, historical, estimates, projections, cities, agglomerations, etc.
But also geopolitical data like the administrative divisions of countries (provinces, counties and such) of all nations of this world. In the resources section one can find a long list of national statistical agencies and other interesting resources.
Population pyramids of the world
There is also a full list of updates.