CIA WorldFact Book

This site provides authoritative national level country information as provided by the Central Intelligence Organization. It is updated every two weeks, which makes it unbeatable as far as currency. There are great downloadable maps and colored illustrations of country flags.

Library of Congress - Country Studies The Country Studies Series presents a description and analysis of the historical setting and the social, economic, political, and national security systems and institutions of countries throughout the world.
NationMaster NationMaster is a vast compilation of data from such sources as the CIA World Factbook, UN, and OECD. Using this data you can generate maps and graphs on all kinds of statistics with ease.
U.S. Department of State In depth country information, including up to date information on U.S. involvement in different world regions.