Tromsø is a city and municipality in Troms county, a population of 64,376 as of 1 January 2016. The most populous town north of it is Alta, Norway, with a population of 14,272 (2013). Tromsø lies in Northern Norway. The 2,521-square-kilometre (973 sq mi) municipality is the 18th largest by area out of the 422 districts in Norway. Tromsø is the 9th most populous municipality in Norway with a population of 74,541. The municipality's population density is 30.1 inhabitants per square kilometer (78/sq mi) and its population has increased by 15.6% over the last decade. It is the largest urban area in Northern Norway and the third largest north of the Arctic Circle anywhere in the world (following Murmansk and Norilsk).
Most of Tromsø, including the city center, is located on the island of Tromsøya, 350 kilometers (217 mi) north of the Arctic Circle. In 2012, Tromsøya had a population of 36,088. Substantial parts of the urban area are also situated on the mainland to the east, and on parts of Kvaløya — a large island to the west. Tromsøya is connected to the mainland by the Tromsø Bridge and the Tromsøysund Tunnel, and to the island of Kvaløya by the Sandnessund Bridge. The city is warmer than most other places located on the same latitude, due to the warming effect of the Gulf Stream. The city center of Tromsø contains the highest number of old wooden houses in Northern Norway, the oldest house dating from 1789. The city is a cultural center for its region, with several festivals taking place in the summer. Torbjørn Brundtland and Svein Berge of the electronica duo Röyksopp and Lene Marlin grew up and started their careers in Tromsø. Noted electronic musician Geir Jenssen also hails from Tromsø.