List of countries by population in 1800

This is a list of countries by population in 1800. Estimate numbers are from the beginning of the year, and exact population figures are for countries that were having a census in the year 1800 (which were on various dates in that year). The bulk of these numbers are sourced from Alexander V. Avakov's Two Thousand Years of Economic Statistics, Volume 1, pages 21 to 24, which cover population figures from the year 1800 divided into modern borders. Avakov, in turn, cites a variety of sources, mostly Angus Maddison. Italian sub figures are derived from elsewhere. Other figures come from Jan Lahmeyer's website, which in turn is based on a variety of sources.



Note
The aggregate populations will exceed the total population because some states existed in multiple entities. For example, the Kingdom of Prussia and the Habsburg monarchy had holdings that were also part of the Holy Roman Empire (though not all of the Prussian and Habsburg territories shared this aspect). In another case, the province of Wallachia was a vassal of the Ottoman sultan, but also a tributary of the Russian Empire.