The Central Intelligence Agency (CIA) publishes The World Factbook in printed and Internet versions. US Government officials may obtain information about availability of the Factbook from their organizations or through liaison channels to the CIA. Other users may obtain sales information about printed copies from the following:

US Government Printing Office
732 N. Capitol St.
Washington, DC 20401
Hours: Monday-Friday 7:00 AM-6:30 PM Eastern Standard Time (EST)
Telephone: [1] (202) 512-1800; toll free: [1] (866) 512-1800
FAX: [1] (202) 512-2104
http://bookstore.gpo.gov/

National Technical Information Service
5285 Port Royal Road
Springfield, VA 22161
Hours: Monday-Friday 8:00 AM-6:00 PM Eastern Standard Time (EST)
Telephone: [1] (800) 553-6847 (only in the US);
[1] (703) 605-6000 (for outside US)
FAX: [1] (703) 605-6900
http://www.ntis.gov/

The World Factbook can be accessed on the Internet at:
https://www.cia.gov/library/publications/the-world-factbook/index.html