Over 99% of the 4.3m population of Norway speak the official language, Norwegian. Norwegian has 2 written forms, “Bokmal” (Book Norwegian) and “Nynorsk” (New Norwegian) and they enjoy the same legal recognition, although “Bokmal” is increasingly more common. Minority languages include Finnish, spoken by 0.2% of the population, mainly in the northern region of Finnmark, as well as “Sami”, a language closely related to Finnish, spoken by 0.9% of the Norwegian population.

Source: http://www.commisceo-global.com/country-guides/norway-guide