Demographics of Belgium
Belgium's three official languages are Dutch, spoken by 59% of the population, French, spoken by 40%, and German, spoken by less than 1%. The vast majority of Belgium's population, 99%, is literate as defined by the Belgian government, i.e. capable of reading and writing in an official language by the time a citizen has reached the age of 15.
Demographics of Belgium
The exact number of French-speakers in Brussels is hard to determine, but it is estimated that 80% of the people living in Brussels use French and 20% use Dutch in their households, as the sole language or secondary language, while Arabic is also largely spoken. See the Brussels article for more details.
In the table are the top 10 countries by origin of the population of Belgium in 2017