Unregistered residents and registered crime: an estimate for asylum seekers and irregular migrants in Norway

The purpose of our study has been to better estimate the number and types of crimes committed by asylum seekers and irregular migrants. While data on immigration status for non-residents are lacking in Norwegian crime statistics, we use indirect identifiers (lack of a national ID number, citizenship, residency) to arrive at an estimate for persons with a pending asylum claim and the related group of irregular migrants (i.e. non-EU citizens). A very small amount of the total crimes registered with a known offender are committed by this group. However, these groups are most likely overrepresented as offenders compared to the registered resident population, also when taking age and gender into consideration. Our method is recommended in a field otherwise dominated by political arguments and as an alternative to registering asylum status in crime registers.