The CIA World Factbook is an annual publication by the Central Intelligence Agency of the United States with basic almanac style information about the various countries of the world. The factbook gives a two to three page summary of the demographics, location, telecommunications capacity, government, industry, military capability, etc. of almost all countries in existence.
The World Factbook is prepared by the Central Intelligence Agency for the use of US Government officials, and the style, format, coverage, and content are designed to meet their specific requirements. Information is provided by Antarctic Information Program[?] (National Science Foundation), Bureau of the Census (Department of Commerce), Bureau of Labor Statistics (Department of Labor), Central Intelligence Agency, Council of Managers of National Antarctic Programs[?], Defense Intelligence Agency (Department of Defense), US Department of State, US Fish and Wildlife Service (Department of the Interior), US Maritime Administration[?] (Department of Transportation), National Imagery and Mapping Agency (Department of Defense), Naval Facilities Engineering Command[?] (Department of Defense), Office of Insular Affairs[?] (Department of the Interior), Office of Naval Intelligence[?] (Department of Defense), United States Board on Geographic Names[?] (Department of the Interior), and other public and private sources.
Because this document is public domain, i.e. not under copyright, people are free not only to redistribute it, but also to modify it in any way they like, without permission of the Central Intelligence Agency (CIA). The official seal of the CIA, however, may NOT be copied without permission as required by the CIA Act of 1949 (50 U.S.C. section 403m). Misuse of the official seal of the CIA could result in civil and criminal penalties.
Many sites have used information in the CIA World Factbook, because of its public domain status, including Wikipedia.
Besides the World Factbook, the CIA puts out a directory of Chiefs of State and Cabinet Members of Foreign Governments each week.