Samenvatting

The spatial concentrations of crime are increasingly being studied in smaller units of analysis. This study examines the extent to which crime levels occur at micro places. Weisburd argues there is a law of crime concentration at micro places. His so-called ‘law of crime concentration at places’ states that within an urban context a limited bandwidth of micro places is associated with a specific cumulative proportion of crime (e.g. 25 or 50 percent of crime in a city). In this study the authors investigate Weisburd’s statement in regard to crime concentrations in two large Belgian cities. Official police crime statistics (PCS) for the period 2004-2012 were used. There are several ways to define and operationalize a micro place. Therefore, this study also examines whether the unit of analysis has implications for the concentration of crime at places. Analyses were conducted at two small levels, namely: grid level (using 200 meters by 200 meters grid cells) and the level of the statistical sector (more or less similar to four digit postcode areas or CBS-neighborhoods). This study shows that the concentrations of crime at grid cells are in line with the findings of Weisburd. This trend is consistent in time, for the types of crime as well as for the two cities involved. The concentrations of crime at the level of the statistical sector appear to be less strong and therefore are not in line with the law of crime concentration at places.