Norderney is one of the seven populated East Frisian Islands off the North Sea coast of Germany. It is also a municipality in the district of Aurich in Lower Saxony. The island is 14 km long and about 2.5 km wide, having a total area of about 26.3 square kilometres (10.2 sq mi) and is therefore Germany's tenth largest island. Norderney's population amounts to about 6,200 people. In 1946 Norderney gained municipal status and belongs to the Aurich "Kreis" (county). On the northern side of the island lies a 14 km long sandy beach.
The neighbouring island to the east is Baltrum, which lies about 800m (half a mile) away. To the west is the island of Juist, about 3 km away.