Koksijde is a municipality located in the Belgian province of West Flanders on the North Sea coast, at the southwest side. It comprises the towns of Koksijde proper, Oostduinkerke, St-Idesbald and Wulpen.
On January 1st, 2006 Koksijde had a total population of 21,269. The total area is 43.96 km² which gives a population density of 484 inhabitants per km².
The municipality of Koksijde comprises the "deelgemeentes" Koksijde proper, Oostduinkerke and Wulpen. The old town centre of Koksijde proper is located about two kilometers from the shoreline. Close by the sea, a new tourist centre, Koksijde-bad, has developed. A bit to the east on the territory is the hamlet of Sint-Idesbald.
The old town centre of Oostduinkerke is located more than one kilometer from the coastline as well, with Oostduinkerke-bad close to the sea. Over 4 kilometers inland is the rural polder village of Wulpen.
The museum of the historical Abbey of Ten Duinen is set in a modern building, explaining the religious and cultural importance of this abbey throughout history and showing the daily life of Cistercian monks from the early Middle Ages, beginning in 1107 till the death of the last monk in 1833. The archeological site has been restored, and is open to the public. The attic of the museum contains a remarkable collection of liturgical silver ware.
The British Military Cemetery (1940-1945) bears witness to British sacrifices in the Battle of Dunkirk.
The Paul Delvaux museum in St-Idesbald houses the largest collection of paintings from this Belgian surrealist painter in the world.