Provinces of Belgium
The country of Belgium is divided into three regions. Two of these regions, the Flemish Region or Flanders, and Walloon Region, or Wallonia, are each subdivided into five provinces. The third region, the Brussels-Capital Region, is not divided into provinces, as it was originally only a small part of a province itself.
Belgian Federal Parliament
The number of seats in the Chamber is constitutionally set at 150 elected from 11 electoral districts. The districts are divided along linguistic lines: 5 Flemish (79 seats), 5 Walloon (49 seats), and the bilingual district of Brussels-Halle-Vilvoorde (22 seats).
The districts are the provinces, except for the districts of Leuven (part of Flemish Brabant) and Brussels-Halle-Vilvoorde. Each district is given a number of seats proportional to its population (not number of voters) ranging from 4 for Luxembourg to 24 for Antwerp.
All districts have an electoral threshold of 5%, except for Brussels-Halle-Vilvoorde and Leuven; all districts are monolingual, except for Brussels-Halle-Vilvoorde which encompasses both the 19 bilingual municipalities from the Brussels-Capital region and some 35 Dutch-speaking municipalities in Flemish Brabant, incl. 7 with language facilities for French-speakers.