Cologne (German: Köln , Coeln historically, Colognian: Kölle ) is Germany's fourth-largest city (more than 1,000,000 inhabitants end 2013, after Berlin, Hamburg, and Munich), and is the largest city both in the German Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants. Cologne is located on both sides of the Rhine River. The city's famous Cologne Cathedral (Kölner Dom) is the seat of the Catholic Archbishop of Cologne. The University of Cologne (Universität zu Köln) is one of Europe's oldest and largest universities. During the 19th and 20th centuries, Cologne absorbed numerous surrounding towns, and by World War I had already grown to 700,000 inhabitants. Industrialization changed the city and spurred its growth. Vehicle and engine manufacturing were especially successful, though heavy industry was less ubiquitous than in the Ruhr area. It is subdivided into 9 districts. It was a District seat in the Prussian province of Rheinland, and a major railway station.
- 1 Postmarks in Germany
- 2 Unified Germany
- 3 Allied Occupied Germany Postmarks
- 4 Postmarks in German Empire
- 5 Cards and Covers
- 6 International Response Coupon
- 7 Railway postmarks
- 8 Postmarks in North German Confederation
- 9 Postmarks in Prussia Rheinland province
Postmarks in Germany
Meter cancels (all Periods)
Cards and Covers
Allied Occupied Germany Postmarks
Postmarks in German Empire
Cards and Covers
International Response Coupon
From COELN to CLEVE (1863), COBLENZ, FRANKFURT A.M., HANNOVER, MAINZ (1860) and VERVIERS (1852, Belgium).
Postmarks in North German Confederation
Until end 1871.
Postmarks in Prussia Rheinland province
Kreis COELN used a Postal code 258, seat of District Cöln.