Providing statistical data for over 170 industries in 50 countries.
CIA World Factbookgreat info by country on geography, people and society, economy, energy, government, transportation, military and security, and transnational issues.
World Bank Open DataGeneral statistics like CO2 emissions, poverty headcount, life expectancy, population, mortality rate, fertility rate, immunizations, school enrollment, contraceptive use, HIV rates, power consumption, inflation, time required to start business, mobile cellular subscriptions, military expenditures, internet useage, net migration, etc.
IMF Country InformationAny help the country has received from IMF, IMF membership, developmental news.
NationMasterA vast compilation of data from such sources as the CIA, UN, and OECD, and a handy way to visually compare nations by generating maps and graphs.