Forest-sur-Marque is a commune of the Nord département, in northern France. The commune is the lowest level of administrative division in the French Republic. Nord (North is a department in the far north of France. It is the country's most populated department In the context of the political and geographic organization of France and many of its former colonies a department (département depaʁtǝmɑ̃ is an Administrative division This article is about the country For a topic outline on this subject see List of basic France topics.
It is part of the Urban Community of Lille Métropole. The Urban Community of Lille Métropole ( French: Lille Métropole Communauté Urbaine) is the intercommunal structure gathering the commune
A geographic coordinate system enables every location on the Earth to be specified in three coordinates using mainly a spherical coordinate system.