Petten is a village in the Dutch province of North Holland. It is a part of the municipality of Schagen, and lies about 15 km northwest of Alkmaar, …Petten is a village in the Dutch province of North Holland. It is a part of the municipality of Schagen, and lies about 15 km northwest of Alkmaar, on the North Sea. The population is ca. 1900. Petten's economy is based on agriculture, and tourism. A particular type sand can be found on the beach of Petten, of sanded quartz with granite. Since 1997 a plan has been developed for a marina with 600 places; called Marina Petten.