Central locations Wallonia
 | Major centre |
 | Regional capital |
 | Regional centre |
 | Centre |
 | Cross-border supporting centre |
 | Rural supporting centre |
 | Touristic supporting centre |
Central locations Saarland
 | Major centre |
 | Middle-order centre |
 | Basic centre |
Central locations Lorraine
 | Metroplitan agglomeration |
 | Agglomeration of regional attractiveness |
 | Agglomeration of local attractiveness |
 | Local centre |
Central locations Luxembourg
 | Major centre of development and attraction |
 | Middle-order centre of development and attraction |
 | Regional centre |
Central locations Rhineland-Palatinate
 | Monocentral major centre |
 | Cooperating major centre |
 | Monocentral middle-order centre |
 | Cooperating middle-order centre (volontary) |
 | Cooperating middle-order centre (obligatory) |
 | Basic centre of the basic network |
 | Basic centre of the complimentary network |
Area of middle-order centrality in Rhineland-Palatinate
 | Grouping of middle-order centrality |
 | Area of monocentral middle-order centrality |
 | Share of functions in Rhineland-Palatinate |