Arrondissement of Istres

The arrondissement of Istres is an arrondissement of France, in the Bouches-du-Rhône department, Provence-Alpes-Côte d'Azur region. Its capital is the city of Istres.
History.
The "arrondissement" of Istres was created in 1981.
Geography.
The "arrondissement" of Istres is in the south of the Bouches-du-Rhône department. It is bordered to the north and east by the Aix-en-Provence "arrondissement", to the south by the Mediterranean Sea and to the west by the Arles "arrondissement".
The "arrondissement" of Istres is the smallest "arrondissement" of the department in area, ; it has a population of 312,489 inhabitants.
Composition.
Cantons.
After the reorganisation of the cantons in France, cantons are not subdivisions of the "arrondissements" so they could have "communes" that belong to different "arrondissements".
There are 6 cantons in the "arrondissement" of Istres and 3 of them do not have all their "communes" in the "arrondissement":
Communes.
The "arrondissement" of Istres has 18 "communes"; they are (with their INSEE codes)ː
The "communes" with more inhabitants in the "arrondissement" are: