Massy is a commune in the southern suburbs of Paris, France. It is located 14.7 kilometres from the center of Paris. Massy underwent rapid dev…Massy is a commune in the southern suburbs of Paris, France. It is located 14.7 kilometres from the center of Paris. Massy underwent rapid development within a short period of time, transforming from a large borough of 6,000 inhabitants in 1950 to a town exceeding 37,000 inhabitants in 1968. Since then, its population of around 40,000 has remained relatively stable. Its population grew again after 2000 because of new constructions.