Copenhagen is the capital and largest city of Denmark, with an urban population of 1,199,224 and a metropolitan population of 1,918,062 (as of 1 April 2011). With the completion of the transnational Øresund Bridge in 2000, Copenhagen has become the centre of the increasingly integrating Øresund Region. Within this region, Copenhagen and the Swedish city of Malmö are growing into a combined metropolitan area. The region is home to 3,766,674 people (April 1 2011). Copenhagen is situated on the islands of Zealand and Amager.

Copenhagen has repeatedly been recognized as one of the cities with the best quality of life. It is also considered one of the world's most environmentally friendly cities. The water in the inner harbour is clean and safe for swimming. 36% of all citizens commute to work by bicycle. Every day, they cycle a combined 1.2 million km.

As of 2010, Copenhagen is ranked as the 10th most expensive city in the world according to Forbes magazine.