Aarhus (officially spelled Århus from 1948 until December 31, 2010) is the second-largest city in Denmark and the seat of Aarhus Municipality. It is located on the east coast of the Jutland peninsula, in the geographical centre of Denmark, northwest of Copenhagen and north of Hamburg, Germany. Aarhus' urban area contains 261,570 inhabitants and the municipal population is 326,676 (1 January 2015).