List of towns and cities in Germany by historical population
The list of the largest German cities provides an overview of the most populous cities that were located in contemporary German territory at the time of the individual statistics. Industrialization in the 19th century, especially since the Gründerzeit and the foundation of the German Empire in 1871, brought with it increased urbanization in Germany, leading to a largely urbanized society.
Source: Wikipedia — List of towns and cities in Germany by historical population (CC BY-SA 4.0)