Metropolitan agglomerations of the German Reich, 1871-1910

The author statistically depicts the population growth of the largest German cities between 1871 and 1910. He uses the official statistics. He breaks down the cities into zones in order to make their development comparable. In order to do this, he used the term agglomeration, with which he refers to the contiguous built-up area, with developed infrastructure as well as traffic routes and rail traffic, and their population. In order to find as uniform a demarcation as possible, he delimits the areas of the respective cities by drawing circles whose radius starts from the center of the city and is 10 km long. This is the entire agglomeration, which finally differentiates it into the inner agglomeration and outer agglomeration. The inner agglomeration is located within 5 km of the city center. The outer agglomeration refers to the areas at a distance of 5 to 10 km around the city center. The following cities are being investigated by him: Aachen; Augsburg; Berlin; Braunschweig; Bremen; Breslau (Wroclaw); Kassel (in the data old spelling: Cassel); Chemnitz; Cologne (in the data old spelling: Cöln); Krefeld (in the data old spelling: Crefeld); Danzig; Dortmund; Dresden; Dusseldorf; Duisburg; Elberfeld; Erfurt; Essen; Frankfurt a. Main; Halle; Hannover; Karlsruhe; Kiel; Koenigsberg; Leipzig; Magdeburg; Mainz; Mannheim; Munich; Nuremberg; Plauen; Posen; Saarbrücken; Stettin; Strasbourg; Stuttgart. Variables are the city area, the inhabitants of the city as a whole, the population as an index on the basis of 1971 = 100, the inhabitants of the territories incorporated into the cities between 1871 and 1910, and the population density of the city and the incorporated areas. Reporting years are 1871, 1880, 1890,1900, and 1910. The data has been classified in the online database histat (https://histat.gesis.org/histat/) under the topic ´population´.