Country Studies The Country Studies series from the Library of Congress. More detailed, but not every country is listed, especially lacking separate entries for colonies and dependent territories. May be slightly out of date for some areas.
Country Information Resources from Golden Gate University, has links to information on regions and countries.
Infonation provides statistical data for member nations of the United Nations.
Maps from the National Geographic Society are available for a wide variety countries and regions. Please note that color maps don't always print well on black-and-white printers.
Maps are also available from the Perry-Castañeda collection at the University of Texas library.
The CIA World Factbook gives basic maps, detailed basic numbers and statistics, as well as a list of major political figures, for all countries.
The US State Department publishes Human Rights and Religious Freedom reports, on a variety of countries. They detail political liberties, freedom of the press and religion, labor rights, the rights of women, and of children.