Trondheim

This article is about the city/municipality in Norway. For other uses, see Trondheim (disambiguation).

Trondheim Tråante
City
From the top: Outer city with Nidelva and sea port, Nidelva seen from Øya, Bakklandet, The city's central square (Torvet), Old Town Bridge, Munkholmen seen from the air
Flag Coat of arms
Nickname:  Stiftstaden (English: "The Diocese City")
Location of the municipality
Trondheim Location within Trøndelag Trondheim Location within Norway
Coordinates: 63°25′47″N 10°23′36″E
Country	Norway
Municipality	Trondheim
County	Trøndelag
District	Trondheim Region
Official language	Bokmål
Established	997
Government
• Mayor	Kent Ranum (H)
• Governing mayor	Kristian Dahlberg Hauge (H)
Area
• City	321.81 km2 (124.25 sq mi)
• Urban	342.30 km2 (132.16 sq mi)
• Metro	7,295 km2 (2,817 sq mi)
Population  (1 January 2026)
• City	218,460
• Density	678.85/km2 (1,758.2/sq mi)
• Urban	186,364
• Urban density	544.45/km2 (1,410.1/sq mi)
• Metro	279,234
• Metro density	38.28/km2 (99.14/sq mi)
• Municipality/Urban rank	3rd/4th
• Metro rank	4th
Demonym(s)	Trondheimer, Trondhjemmer,
GDP
• Metro	€26.143 billion (2021)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Website	www.trondheim.kommune.no

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Historical population

Year	Pop.	±%
1769	11,315	—
1951	56,582	+400.1%
1960	59,286	+4.8%
1970	126,190	+112.8%
1980	134,726	+6.8%
1990	137,346	+1.9%
2000	148,859	+8.4%
2010	171,540	+15.2%
2014	183,960	+7.2%
2022	211,106	+14.8%
Source: Statistics Norway

Trondheim (/ˈtrɒn(d)haɪm/ TRON(D)-hyme; Urban East Norwegian: [ˈtrɔ̂nː(h)æɪm]; Southern Sami: Tråante), historically Kaupangen, Nidaros, and Trondhjem (locally [ˈtrɔ̂nːjæm] ^ⓘ), is a city and municipality in Trøndelag county, Norway. As of 1 January 2026, it had a population of 218,460. Trondheim is the third most populous municipality in Norway, and is the fourth largest urban area. Trondheim lies on the south shore of Trondheim Fjord at the mouth of the Nidelva. Among the significant technology-oriented institutions headquartered in Trondheim are the Norwegian University of Science and Technology (NTNU), the Foundation for Scientific and Industrial Research (SINTEF), the Geological Survey of Norway (NGU), and St. Olavs University Hospital.

The settlement was founded in 997 as a trading post and served as the capital of Norway through the Viking Age until 1217. From 1152 to 1537, the city was the seat of the Catholic Archdiocese of Nidaros; it then became, and has remained, the seat of the Lutheran Diocese of Nidaros and the site of the Nidaros Cathedral. The city was incorporated in 1838. The current municipality was formed in 1964, when Trondheim merged with Byneset Municipality, Leinstrand Municipality, Strinda Municipality, and Tiller Municipality, and further expanded on 1 January 2020, when Trondheim merged with Klæbu Municipality.

Trondheim has a mild climate for its northerly latitude, resulting in moderate summers and winters that often remain above the freezing point in seaside areas. At higher elevations, though, the microclimate is colder and snowier.

The city functions as the seat of the County Mayor of Trøndelag county but not as its administrative centre (which is Steinkjer). This is designed to avoid making the county administration too centralized.

Trondheim is home to football club Rosenborg, Norway's most successful football club, and Granåsen Ski Centre, which has hosted the World Championship in Nordic skiing.