Rennes (/ʁɛn/Note 1 Listen) is a municipality in northwestern France, capital of the Ille-et-Vilaine department and the Brittany region. The city is located in Haute-Bretagne—the eastern part of Brittany—at the confluence of the Ille and Vilaine rivers.Located on the European Atlantic arc, Rennes has 225,081 intramural inhabitants, which makes it the first city in the Brittany region, the second city in the Great West and the eleventh most populous municipality in France in terms of number of inhabitants. residents. The urban unit is populated by 371,464 inhabitants in 2021 and its catchment area, which includes 771,320 inhabitants in 2021, is the tenth nationally. Rennes is the seat of a metropolis of 462,580 inhabitants in 2020, making it one of the eleven major French metropolises under common law (since January 2015).