Geographical agglomeration: the Case of Belgian manufacturing industry

The aim of this study is to provide a comprehensive discussion of the use of the Ellison and Glaeser index and subsequently to carry out a descriptive analysis of the geographical concentration of the manufacturing sector in Belgium. To assess the degree of concentration, individual plant data on wage and salary earners are used, with a relatively fine geographical breakdown (districts and townships). It is shown that more than 30% of the industries are excessively agglomerated.