La Chaux-de-Fonds is a city located in the canton of Neuchâtel in Switzerland. Situated within the Jura Mountains at an altitude of 992 metres, it lies just a few kilometres south of the French border.
The city serves as a significant urban center in Romandie, the French-speaking region of Switzerland. It ranks as the fifth-largest city in this area, with a population of 36,915 residents.