Mantes-la-Jolie (French pronunciation: [mɑ̃t la ʒɔli] ⓘ, often informally called Mantes) is a commune in the Yvelines department in the Île-de-France region of north-central France.

Mantes was halfway between the centres of power of the dukes of Normandy at Rouen and the Kings of France in Paris.

At the end of the 19th century, Impressionist painters like Pierre-Auguste Renoir, Édouard Manet and Claude Monet came to paint the Seine River which crosses the town.

The population data in the table and graph below refer to the commune of Mantes-la-Jolie proper, in its geography at the given years.

[5] The city is divided into four districts each with a characteristic urban form: The main monument in Mantes is the church of Notre-Dame dating back to 12th century.

Mantes is home to small businesses working on concrete and chemical processing, but is inevitably drawn into the economic area of nearby Paris.