Casablanca is Morocco's largest city as well as its chief port. It is also the biggest city in the Maghreb region. The 2004 census recorded a population of 3,500,000 in the prefecture of Casablanca and 6,000,000 in the region of Grand Casablanca. Casablanca is considered the economic and business center of Morocco, while the political capital city of Morocco is Rabat. Casablanca hosts headquarters and main industrial facilities for the leading Moroccan and international companies based in Morocco. Industrial statistics show Casablanca retains its historical position as the main industrial zone of the country. The Port of Casablanca is one of the largest artificial ports in the world, and the largest port of North Africa. It is also the primary naval base for the Royal Moroccan Navy.