Paris (English /ˈpærɪs/, Listeni/ˈpɛrɪs/; French: [paʁi] ( listen)) is the capital and most populous city of France. It is situated on the River Seine, in the northern central part of the country, at the heart of the Île-de-France region, 450 kilometres (280 mi) southeast of London, 287 kilometres (178 mi) south of Calais, 774 kilometres (481 mi) north of Marseilles, and 135 kilometres (84 mi) southeast of Rouen by road. Oval in shape, it covers an area of about 87 square kilometres (34 sq mi) and is surrounded by an orbital motorway. Within its administrative limits (the 20 arrondissements), Paris had a population of 2,234,105 in 2009, and its metropolitan area is one of the largest population centres in Europe, with more than 12 million inhabitants. Inhabitants of the city are referred to as "Parisians" (English /pəˈrɪzɪənz/ or /pəˈriʒənz/; French: Parisiens (masculine) – French pronunciation: [pa.ʁi.zjɛ̃] or Parisiennes (feminine) – French pronunciation: [pa.ʁi.zjɛn]).