Provinces of Belgium
During the second half of the 20th century, Belgium transitioned from a unitary state to a federal state with three Communities and three Regions. As part of the state reforms, the (bilingual) province of Brabant was split in 1995 three ways: into two (unilingual) provinces (Flemish Brabant and Walloon Brabant) and into the (bilingual) Brussels-Capital Region. (The Brussels-Capital Region does not belong to any province, is not a province, and does not contain any provinces.) The two new Brabant provinces became part of the Flemish Region and the Walloon Region respectively. The remaining eight provinces became part of these regions as well, so the Flemish Region and the Walloon Region each contain five provinces.
Municipalities of Belgium
Belgium comprises 581 municipalities (; ; ) grouped into five provinces in each of two regions and into a third region, the Brussels-Capital Region, comprising 19 municipalities that do not belong to a province. In most cases, the municipalities are the smallest administrative subdivisions of Belgium, but in municipalities with more than 100,000 inhabitants, on the initiative of the local council, sub-municipal administrative entities with elected councils may be created. As such, only Antwerp, having over 500,000 inhabitants, became subdivided into nine districts (). 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.