Concentration index

The figures shown on these maps are concentration index figures. They indicate the shares of immigrants registered in a municipality as compared to the share in the total population who are registered in this municipality. A figure exceeding 100 means there are relatively many immigrants per inhabitant; below 100 means that there are relatively few immigrants per inhabitant. For example: 50 means that a municipality has half as many immigrants per inhabitant as the average ratio in the Netherlands, while 200 means there are twice as many immigrants as the average number in the Netherlands. This concerns first-generation immigrants who have settled in the Netherlands since 1 January 2015 and are still registered here. The observation concerns the municipality where they are currently registered. Shares in the population of a municipality represent the population as at 1 October 2019.