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Welcome to The World Factbook
The World Factbook provides information on the history, people and society, government, economy, energy, geography, communications, transportation, military, and transnational issues for 267 world entities. The Reference tab includes: a variety of world, regional, country, ocean, and time zone maps; Flags of the World; and a Country Comparison function that ranks the country information and data in more than 75 Factbook fields.
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May 28, 2020
By far the two most common forms of citizenship are by birth (where one is born) or by descent (nationality of one or both parents). The World Factbook lists both of these citizenship types and whether they are used by any particular country. The Factbook also indicates whether dual citizenship is recognized by a country and what the residency requirements are before applying for naturalization in a country. The "Citizenship" entry may be found in the Government section.
May 21, 2020

Did you know that more than three-quarters of the world’s countries have a maritime boundary of some sort. As such, they have an exclusive economic zone (EEZ), which is a sea zone – set forth by the 1982 UN Convention on the Law of the Sea - over which a country has special rights regarding the exploration and use of marine resources. An EEZ stretches from a country’s mean-low tide baseline at its coast out to 200 nautical miles. Most maps do not show EEZs, but The World Factbook’s World Oceans map does (under the References tab>Regional and World Maps>World Oceans; the PDF version is the most informative, particularly when enlarged). More than one-third of the world’s ocean area falls within an EEZ.

May 14, 2020
In the Communications category, the "Telephone systems" field name has been adjusted to "Telecommunication systems" to better reflect its many components including various types of telephone systems, cable transmission, satellite linkage, and diverse categories of radio transmission/relay.
May 07, 2020
The "Capital" entry (under Government) is where visitors to The World Factbook will find information related to time. This placement is because the Factbook indicates the time difference in a country relative to the time observed in Washington, DC. The "Capital" entry is also where information on daylight savings time and time zones may be found.

Did you know that only about a third of all countries - and only about one-fifth of the world's inhabitants - use daylight savings time? Find more detailed information on time zones and daylight savings time under World>Government>Capital.
April 30, 2020
Did you know? In a 100-year period, a water molecule spends 98 years in the ocean, 20 months as ice, about two weeks in lakes and rivers, and less than a week in the atmosphere. Groundwater can take 50 years to just traverse 1 km (0.6 mi). Find many more fascinating geographic facts about our world and its oceans in the "Geographic overview" of the World entry.
April 23, 2020
Most US national parks have been closed in response to the COVID-19 outbreak (some outdoor spaces in certain parks, however, remain accessible to the public). Visitors to The World Factbook can safely tour dozens of famous US parks and sites - and view hundreds of photos - by visiting the United States entry and clicking on the VIEW PHOTOS icon.
April 16, 2020
The useful population pyramids that appear in the People and Society category for every country under the "Age structure" entry have been updated with the latest 2020 data. These graphics have also been modified by the US Census Bureau to make them visually more appealing and easier to comprehend.
April 09, 2020
The language and religion entries in The World Factbook's Travel Facts have all been recently updated. We encourage students at home participating in online learning to use Travel Facts, as well as The World Factbook, for their studies of geography and national customs.
April 02, 2020
The Department of State advises US citizens to avoid all international travel at this time due to the global impact of COVID-19. Please follow these links for more detailed information: World Health Organization and/or US State Department
March 19, 2020
Appendix H: Strategic Materials has been updated with the latest import data.