A device, system and method for dispatching responders to patrol routes is provided. A device accesses: historical patrol route information indicating patrol routes taken for each of a plurality of time periods, each of the patrol routes taken by a respective uniquely identified responder; and historical crime information indicating actual crime rates for the patrol routes taken. The device receives a request to assign responders to respective patrol routes and responsively: determines available responders for the upcoming time period; determines, based on the available responders and the historical crime information, a mapping of the available responders to the respective patrol routes that reduces and/or minimizes an expected crime rate for the upcoming time period across the respective patrol routes; and based on the mapping, causes the available responders to be dispatched to the respective patrol routes for the upcoming time period.