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Resources : General Data and Statictics
World Perspective - It's a site that basically combines all data about different countries onto one site. Find all kinds of information on more than 100 countries listed in alphabetical order. Hundreds of stats for most countries grouped in 16 comprehensive categories, viewed by bargraph, scattergraph, maps. Cross variables, add parameters and you can even make your own graph for some of them. Errata for the site available here.
Data on the Net Search or browse a listing of 363 Internet sites of numeric Social Science statistical data, data catalogs, data libraries, social science gateways, addresses and more.
Geospatial and Statistical Data Center
Historical world population figures and other related statistics
Historical population figures thread, courtesy of Thande
Finding U.S. and international statistics
Year-by-year population statistics
Politic Resources.net - Lots of useful political and politological statistics.
Historical timelines for less famous coutnries and territories - Very useful chronological overviews of the history of various countries and territories (mainly smaller and more obscure ones).