Tretten

For the biopharmaceutical, see Catridecacog.

Tretten
Village
View of the village
Interactive map of Tretten
Tretten Location within Innlandet Tretten Location within Norway
Coordinates: 61.31438°N 10.30057°E / 61.31438; 10.30057
Country	Norway
Region	Eastern Norway
County	Innlandet
District	Gudbrandsdalen
Municipality	Øyer Municipality
Area
• Total	1.22 km2 (0.47 sq mi)
Elevation	189 m (620 ft)
Population  (2024)
• Total	861
• Density	706/km2 (1,830/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Post Code	2635 Tretten

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Tretten is a village in Øyer Municipality in Innlandet county, Norway. The village is located on the Losna lake, which is part of the Gudbrandsdalslågen river. Tretten is located in the Gudbrandsdal valley, along the Gudbrandsdalslågen river in the southern part of the municipality. It is located along the European route E6 highway, about 25 kilometres (16 mi) north of the town of Lillehammer. The municipal center of Tingberg lies about 5 kilometres (3.1 mi) to the southeast of Tretten.

The 1.22-square-kilometre (300-acre) village has a population (2024) of 861 and a population density of 706 inhabitants per square kilometre (1,830/sq mi).