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,
Cologne Carnival At that time, Cologne was the largest central European city, having a huge percentage of agricultural land inside its walls and the farmers guild was well respected and influential). The sword and the flail symbolize his loyalty to the empire and his truthfulness. As the keeper of the city, he also keeps the city keys at his girdle. The key symbolizes the heroes of the city militia contingent in the Battle of Worringen AD1288, whereafter the city achieved independence from the archbishop of Cologne. The "maiden", also called "" (Her Loveliness) symbolizes the patronizing mother Colonia and is traditionally played