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 War 1288. After that, the archbishop and Prince-elector used the smaller cities of Bonn, south of Cologne, and Brühl, south of Cologne, on the Rhine River, as his capital and residence; by 1580, both his residence and the capital were located in Bonn. Although the city of Cologne obtained its status as a free imperial city in 1478, the Archbishop of Cologne retained judicial rights in the city; he acted as a Vogt, or reeve, and reserved the right of blood justice, or "Blutgericht"; only he could impose the so-called blood punishments, which included capital punishments, but also physical punishments that