Demographics of Cologne and on 1 April 1888 ended in a first major incorporation. The territorial expansion, beginning in the late 19th century, were significant marks for the city's population growth. Major communal reorganizations took place in 1910, 1914, 1922 and 1975. Demographics of Cologne Cologne () is Germany's fourth-largest city and the largest city in the Rhineland. As of 31 December 2011, there were officially 1,017,155 residents. The city is center of the Cologne/Bonn Region with around 3 million inhabitants (including the neighboring cities of Bonn, Hürth, Leverkusen, and Bergisch Gladbach). The walls of Colonia Agrippina covered an area of 96.8 hectares,
History of the Jews in Cologne The persecution of the Jewish community at the time of the Black Death became the fiercest in the whole of the Middle Ages.In 1340 a terrible pestilence arrived in Europe. The Black Death had not reached Cologne until December 1349 However, reports of its devastating impact arrived on the Rhine from the south considerably earlier. Ultimately, between 30-60% of the European population died from the epidimic, provoking fears of an apocalyptic nature. Accusations that the plague was caused by a conspiracy of the Jews to poison the wells (accusations that were not proven in even a single case) apparently had