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 History of the Jews in Cologne The history of the Jews in Cologne is documented from the year 321 AD, almost as long as the history of Cologne. Over its history, the Jewish community of Cologne has suffered persecutions, many expulsions, massacres and destruction. The community numbered about 19,500 people before its dispersal, murders and destruction in the 1930s by the Nazis before and during World War II. The community has re-established itself and now numbers about 4,500 members. Because of its historical continuity, today's Jewish synagogue calls itself the "oldest Jewish congregation north of the Alps". Cologne was founded