Sør-Trøndelag was a county comprising the southern portion of the present-day Trøndelag county in Norway. It bordered the old Nord-Trøndelag county as well as the counties of Møre og Romsdal, Oppland, and Hedmark. To the west is the Norwegian Sea, and to the east is Jämtland in Sweden. The county was separated into a northern and southern part by the Trondheimsfjord. Slightly over 200,000 of the county's population lives in the city of Trondheim and its suburbs. The Norwegian dialect of the region is Trøndersk.