{{Historical populations |footnote = Source: Statistics Norway. |shading = off |1951|35838 |1961|57573 |1971|76580 |1981|80385 |1991|90579 |2001|101340 |2011|112789 |2012|114489 |2020|127731 |2021|128760 }} Bærum () is a municipality in the Greater Oslo Region in Norway that forms an affluent suburb of Oslo on the west coast of the city. Bærum is Norway's fifth largest municipality with a population of 128,760 (2021). It is part of the electoral district and historical county of Akershus and of the newer Viken County. The administrative centre of the municipality is the town of Sandvika. Bærum was established as a municipality on 1 January 1838. Bærum has the highest income per capita in Norway and the highest proportion of university-educated individuals. Bærum, particularly its eastern neighbourhoods bordering West End Oslo, is one of Norway's priciest and most fashionable residential areas, leading Bærum residents to be frequently stereotyped as snobs in Norwegian popular culture. The municipality has been voted the best Norwegian place to live in considering governance and public services to citizens. Name The name (Old Norse: Bergheimr) is composed of berg, which means "mountain", and heimr, which means "homestead" or "farm". It probably originally belonged to a farm located at the base of the prominent mountain of Kolsås. In Old Norse times, the municipality was often called Bergheimsherað, meaning "the herað (parish/district) of Bergheimr". Coat-of-arms The coat-of-arms was granted on 9 January 1976. They show an old silver-colored lime kiln on a green background. That was an important aspect of the local economy from the Middle Ages until around 1800. There are still some original ovens visible in the municipality. History The area known today as Bærum was a fertile agricultural area as far back as the Bronze Age, and several archeological finds stem from the Iron Age. The first mention of the name is from the saga of Sverre of Norway, from about 1200. There are ruins of stone churches from the 12th century at Haslum and Tanum. The pilgrim road to Trondheim that was established after 1030 went through Bærum, and there is evidence that lime kilns were in use in the area in 850. There were shipping ports for the quicklime at Slependen and Sandvika. The lime kiln is the main motif for the municipality's coat of arms. In the 17th century, iron ore was discovered in Bærum and the ironworks at Bærums Verk were founded. Industries such as paper mills, nail factories,