Tårnby Municipality is a kommune bordering Copenhagen Municipality on the island of Amager just east of Zealand in eastern Denmark. The municipality includes the islands of Saltholm and Peberholm (1.3 km2), and covers an area of 64.95 km2 of which 48.9 on Amager. It has a population of 43,042. Its mayor is Allan S. Andersen, a member of the Social Democrats (Socialdemokraterne) political party.

Copenhagen Municipality, also known in English as the Municipality of Copenhagen, located in the Capital Region of Denmark, is the largest of the four municipalities that constitute the City of Copenhagen, the other three being Dragør, Frederiksberg, and Tårnby. The Municipality of Copenhagen constitutes the historical city centre and the majority of its landmarks. It is the most populous in the country with a population of 656,787 inhabitants, and covers 86.4 square kilometres (33.4 sq mi) in area,. Copenhagen Municipality is located at the Zealand and Amager islands and totally surrounds Frederiksberg Municipality on all sides. The strait of Øresund lies to the east. The city of Copenhagen has grown far beyond the municipal boundaries from 1901, when Frederiksberg Municipality was made an enclave within Copenhagen Municipality. Frederiksberg has the largest population density of the municipalities of Denmark.