Richelieu is a commune in the Indre-et-Loire department in central France. It lies south of Chinon and west of Sainte-Maure de Touraine and is s…Richelieu is a commune in the Indre-et-Loire department in central France. It lies south of Chinon and west of Sainte-Maure de Touraine and is surrounded by mostly agricultural land. Its inhabitants are called Richelais, and Richelaises.