Poitiers is a city on the river Clain in west-central France. It is a commune, the capital of the Vienne department and the historical center of Poito…Poitiers is a city on the river Clain in west-central France. It is a commune, the capital of the Vienne department and the historical center of Poitou Province. In 2021, it had a population of 90,240. Its conurbation had 134,397 inhabitants in 2021 and is the municipal center of an urban area of 281,789 inhabitants. It is a city of art and history, still known popularly as "Ville aux cent clochers".