Claim: Belgium is mostly Flemish.

The Flemish or Flemings -LRB- Vlamingen -RRB- are a Germanic ethnic group native to Flanders , in modern Belgium , who speak Dutch , especially any of its dialects spoken in historical Flanders , known collectively as Flemish Dutch . They are one of two principal ethnic groups in Belgium , the other being the French-speaking Walloons . Flemish people make up the majority of the Belgian population -LRB- about 60 % -RRB- . Historically , all inhabitants of the medieval County of Flanders were referred to as `` Flemings '' , irrespective of the language spoken . The contemporary region of Flanders comprises a part of this historical county , as well as parts of the medieval duchy of Brabant and the medieval county of Loon .