Nantes is a city in Loire-Atlantique on the Loire, 50 km (31 mi) from the Atlantic coast. The city is the sixth-largest in France, with a population of 309,346 in Nantes and a metropolitan area of nearly 973,000 inhabitants (2017). With Saint-Nazaire, a seaport on the Loire estuary, Nantes forms one of the main north-western French metropolitan agglomerations.