Siljan is a municipality

Municipalities of Norway

Norway is divided into 19 administrative regions, called counties , and 430 municipalities...

 in Telemark

Telemark

is a county in Norway, bordering Vestfold, Buskerud, Hordaland, Rogaland and Aust-Agder. The county administration is in Skien. Until 1919 the county was known as Bratsberg amt.-Location:...

 county

Counties of Norway

Norway is divided into 19 administrative regions, called counties . The counties form the primary first-level subdivisions of Norway and are further divided into 430 municipalities...

, Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

. It is part of the traditional region

Districts of Norway

The country Norway is historically divided into a number of districts. Many districts have deep historical roots, and only partially coincide with today's administrative units of counties and municipalities. The districts are defined by geographical features, often valleys, mountain ranges, fjords,...

 of Grenland

Grenland

Grenland is a traditional district in the county of Telemark, in the south of Norway. It is composed of the municipalities Skien, Porsgrunn, Bamble, Nome, and Siljan. Sometimes the municipalities Kragerø, and Drangedal are considered being part of the area...

. The administrative centre of the municipality is the village of Siljan. The parish

Parish

A parish is a territorial unit historically under the pastoral care and clerical jurisdiction of one parish priest, who might be assisted in his pastoral duties by a curate or curates - also priests but not the parish priest - from a more or less central parish church with its associated organization...

 of Slemdal was established as a municipality on 1 January 1838 (see formannskapsdistrikt

Formannskapsdistrikt

Formannskapsdistrikt was the name for a Norwegian local self-government districts put into force in 1838. This system of municipality was created in a bill approved by the Storting and signed into law by King Carl Johan on 14 January 1837...

). The name was later changed to Siljan.

The municipality is located northeast of Skien

Skien

' is a city and municipality in Telemark county, Norway. It is part of the traditional region of Grenland. The administrative centre of the municipality is the city of Skien. Skien is also the administrative centre of Telemark county....

 and borders Buskerud

Buskerud

is a county in Norway, bordering Akershus, Oslo, Oppland, Sogn og Fjordane, Hordaland, Telemark, and Vestfold. The county administration is located in Drammen.-Geography:...

 county in the north and Vestfold

Vestfold

is a county in Norway, bordering Buskerud and Telemark. The county administration is in Tønsberg.Vestfold is located west of the Oslofjord, as the name indicates. It includes many smaller, but well-known towns in Norway, such as Larvik, Sandefjord, Tønsberg and Horten. The river Numedalslågen runs...

 county in the east. There is a forest

Forest

A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending where you are in the world, what is considered a forest may vary significantly in size and have various classification according to how and what of the forest is composed...

 district on both sides of Skiensvassdraget (Skien river).