|— Municipality —|
|Stadtinsel at the confluence of the Breis River (left) and the Velden River (right)|
[[file:Template:Location map Breisland|250px|Koblenz is located in Template:Location map Breisland]]<div style="position: absolute; top: Expression error: Unrecognized punctuation character "[".%; left: Expression error: Unrecognized punctuation character "[".%; height: 0; width: 0; margin: 0; padding: 0;">
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|• Total||105.4 km2 (40.7 sq mi)|
|• Density||20,000/km2 (53,000/sq mi)|
Koblenz is the capital and largest city of Breisland as well as one of the largest cities in Illypnia. With a 2016 population of 11,398,748 distributed over a land area of about 1,302.6 square kilometers, Koblenz is also the most densely populated major city in Breisland. Located in the center of the state of Würzburg, the city is the center of the Koblenz metropolitan area, one of Adonia's most populous megacities, with a population of 20,076,664 as of the 2016 census. A global power city, Koblenz has been described as the cultural, financial, and media capital of Adonia, and exerts a significant impact upon commerce, entertainment, research, technology, education, politics, tourism, art, fashion, and sports.
Koblenz is also part of the Greater Koblenz metropolitan region, home to a population of 54,761,071 over an area of 58,323 square kilometers, representing 94% of the population and 73% of the territory of Würzburg.