List of countries by population in 1900

This is a list of countries by population in 1900, with colonial possessions being counted towards the ruling country's total (such as Poland counting towards Russia and Cuba counting as part of the United States).

Estimate numbers are from the beginning of the year and exact population figures are for countries that held a census on various dates in the year 1900.

World map of 1910 showing colonial possessions and commercial highways
Map from The Harmsworth atlas and Gazetter showing the worlds population density in 1908