About this sound Sør-Trøndelag is a county in the area Trøndelag in Norway, bordering Nord-Trøndelag, Møre og Romsdal, Oppland and Hedmark. To the west is the Norwegian Sea (Atlantic Ocean), and to the east is Sweden. The county is separated into a northern and southern part by the Trondheimsfjord. Slightly over 200 000 of the population lives in Trondheim and its suburbs. The Norwegian dialect of the region is Trøndersk.The name Sør-Trøndelag was created in 1919. It means '(the) southern (part of) Trøndelag'.Until 1919 the name of the county was Søndre Trondhjems amt. The meaning of this name was '(the) southern (part of) Trondhjems amt'. (The old Trondhjems amt, created in 1662, was divided in 1804. Trondhjem is the old form of Trondheim.)See also Nord-Trøndelag