Europe
In 2017, the population of Europe was estimated to be 742 million according to , which is slightly more than one-ninth of the world's population. This number includes Asian Russia (Siberia, about 36 million people) but excludes the European part of Turkey, Cyprus and the Transcaucasian countries.
A century ago, Europe had nearly a quarter of the world's population. The population of Europe has grown in the past century, but in other areas of the world (in particular Africa and Asia) the population has grown far more quickly. Among the continents, Europe has a relatively high population density, second only to Asia. Most of Europe is in a mode of Sub-replacement fertility, which means that each new(-born) generation is being less populous than the older.
The most densely populated country in Europe (and in the world) is the microstate of Monaco.
Romani diaspora
As of the early 2000s, an estimated 4 to 9 million Romani people lived in Europe and Asia Minor. although some Romani organizations estimate numbers as high as 14 million.
Significant Romani populations are found in the Balkan peninsula, in some Central European states, in Spain, France, Russia, and Ukraine. The total number of Romani living outside Europe are primarily in the Middle East and North Africa and in the Americas, and are estimated in total at more than two million. Some countries do not collect data by ethnicity.