Belgium
In Belgian municipalities with more than 100,000 inhabitants, on initiative of the local council, sub-municipal administrative entities with elected councils may be created. As such, only Antwerp, having over 460,000 inhabitants, became subdivided into nine districts (Dutch: districten).
The Belgian arrondissements (also in French as well as in Dutch), an administrative level between province (or the capital region) and municipality, or the lowest judicial level, are in English sometimes called districts as well.
Read more about this topic: District