The urban area of Copenhagen, lying mostly in the Capital Region of Denmark but also in Region Zealand, consist of Copenhagen and Frederiksberg municipalities and the former Copenhagen County. In all, it consists of 18 municipalities, and except parts of Ballerup, Greve, Ishøj, former Søllerød and former Værløse, mentioned with their population included from 2007. Ishøj and Greve Strand are included for the first time since 1999. As of 1 January 2022, this area had a population of 1,336,982. Statistics Denmark states that the definition of the urban area is based on UN's 200m definition.

Ballerup is a Danish town, seat of the Ballerup Municipality, in the Region Hovedstaden. There are approximately 25 schools in Ballerup Municipality. Ballerup has its own educational institution specialized in the study, training and research of music. It is twinned with East Kilbride in Scotland.