Oostvoorne is a village in the Dutch province of South Holland. It is a part of the municipality of Voorne aan Zee, and lies about 9 km north of H…Oostvoorne is a village in the Dutch province of South Holland. It is a part of the municipality of Voorne aan Zee, and lies about 9 km north of Hellevoetsluis. In 2001, the town of Oostvoorne had 5,403 inhabitants, the built-up area of the town was 1.9 km², and contained 2,274 residences. The statistical area "Oostvoorne", which also can include the peripheral parts of the village, as well as the surrounding countryside, has a population of around 7,270.