Welcome to GeoHive, a site with all kinds of population 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.
UNdata is an internet-based data service which brings UN statistical databases within easy reach of users through a single entry point from which users can now search and download a variety of statistical resources of the UN System.
The Population Reference Bureau website provides global population handbooks, serials, and reference publications, as well as data analysis tools for understanding and communicating population and health trends.