It covered an area roughly corresponding with the actual French regions of Occitanie and Provence-Alpes-Côte d'Azur.
The septentrional Chasséen culture spread throughout the plains and plateaux of France, including the Seine basin and the upper Loire valleys, and extended to the present-day départments of Haute-Saône, Vaucluse, Alpes-de-Haute-Provence, Pas-de-Calais, and Eure-et-Loir.
Excavations at Bercy (in Paris) have revealed a Chasséen village (4000 BC - 3800 BC) on the right bank of the Seine; artifacts include wood canoes, pottery, bows and arrows, and wood and stone tools.
Chasséens were sedentary farmers (rye, panic grass, millet, apples, pears, prunes) and herders (sheep, goats, oxen, pigs).
[3] From the Champ du Poste necropolis (Carcassonne), three individuals were genetically characterized, and the two Y-chromosome haplogroups found were different: G2a2a1a2a1 and H2m.