Exploiting the results of crime mapping for the needs of the police forces around the world is not new. Crime mappingis not used just to see the location of a crime on a map but mainly for various types of analysis. At the current time, inhabitantsof some cities can themselves prepare a simple analysis when the outputs of crime mapping are published within the Geoweb.Several methodologies for mapping crime across the world are described. Mapping using hot spots is among the preferred methods,particularly in finding the problem locations. In Slovakia using crime mapping through hot spot analysis was implemented for the firsttime in Košice, which became the European Capital of Culture in the 2013. The aim of the research was the identification of crimehotspots as well as their changes over time. Data between the years 2011 and 2015 was prepared for the whole of Košice, a city witha population of about 240,000. This article focuses on the description of the potential uses of crime hotspot mapping as a meansto detect changes in crime in both space and time. The results demonstrated the suitability of the methodology for tracking changes.There is no significant difference in the number of offences in the city during the reporting period but there is a significant differencein their distribution within the city in various years. The results also confirmed the concentration of crime in areas with the highestdensity of population. The results are useful in the prevention of crime in the selection of sites for the location of CCTV and monitoringchanges after the implementation of prevention activities. A further possible use is possible sociological research of communities.