The World Factbook

The World Factbook provides basic intelligence on the history, people, government, economy, energy, geography, environment, communications, transportation, military, terrorism, and transnational issues for 266 world entities.

Travel the globe with CIA’s World Factbook.

What's New

According to UN estimates, the World population reached 8 billion this week. This marks the third time that The World Factbook has marked a billion-person growth milestone. Previous instances occurred in 1999 (6 billion) and 2012 (7 billion). This phenomenal growth is due to the gradual increase in human longevity owing to improvements in nutrition, personal hygiene, public health, and medicine, as well as high and persistent levels of fertility in some countries. While it took the global population about 10.7 years to grow from 7 to 8 billion, it will take some 15 years – until 2037 – for it to reach 9 billion, a sign that the overall growth rate of the global population is slowing.

VIEW ALL UPDATES about What's New

Explore Countries

Explore All Countries
World Travel Facts

Travel more intelligently with The World Factbook Travel Facts. Here’s what you should know about each country before you go.

One-page Country Summaries

Pressed for time? Check out our one-page summaries for essential information on each country.

Flags of the World

Every flag has a story. View flags of all the world’s countries and territories to learn the symbolism behind each design.

Country Comparisons

Love data? The World Factbook has over 65 rank order pages that compare country data in specific fields.

World Factbook Is Just the Start. Apply for a Job at CIA.

Curious about other cultures? Want to use your knowledge to help keep America safe? Make a career out of learning about the world.

Browse Jobs about World Factbook Is Just the Start. Apply for a Job at CIA.