Jutland (Danish: "Jylland"; German: "Jütland") is a peninsula in northern Europe. It forms the mainland part of Denmark and a northern part of Germany. It separates the North Sea from the Baltic Sea. Its terrain is relatively flat, with low hills and peat bogs. It has an area of 29,775 km² (11,496 square miles), and a population of 2,491,852 (2004).