The area is constantly changing and developing. Despite difficult economic and social conditions, Planoise has become a commercial crossroads and a multicultural sector; the area is home to people from over 50 different cultural origins. Still, the area contains notable buildings such as the Departmental archives of Doubs and the Statue of Diversity. Objects were found in the Epoisses area during archaeological excavations, including a flint point dating to the Middle Paleolithic, three bracelets dating to the end of the Iron Age BCE , and an oil lamp dating to Hellenistic Greece between the first and fourth century BCE.
The name "Planoise" first appears officially in records in The name comes from the Latin word "planesium", which means "plain. Between the Middle Ages and the modern era, the area was almost uninhabited. It was an agricultural area, farming mainly potatoes. He sent an army, which was stopped at Planoise. They abandoned their plans to take the city. Many farms were built in the area at the beginning of the 20th century. As the population grew, agriculture became a major sector of the economy.
Construction began in on 13, new dwellings in Planoise, and continued until The first inhabitants settled in the new buildings in At the beginning of the s, the first shops were under construction, and the church of Planoise was built in Soon after, Diderot school was built, and the Cassin sector expanded.
This period is known as the "golden age" of Planoise. In , the population was 12, inhabitants. Like other areas of France at the time, Planoise came into economic and social difficulties. In , during the civil unrest in France , the "Forum" building was burned. Salah Gaham died in the fire. To stop the civil unrest in Planoise, the municipality tried to react promptly by opening a commissionership in Cassin sector.
However, it was burned in Since , an area of the neighborhood was classed as a "zone franche urbaine" exoneration of taxes for new firms created over the following 10 years , enabling the establishment of many new companies and businesses. The area is located in a plain measuring hectares, between the hill of Planoise m and the hill of Rosemont m.
