Do we know whether the use of geographic information systems (GIS) in law enforcement agencies increases police performance? This study examines the impact of GIS use to police performance outcomes in cities and counties of the U.S. between 2000 and 2007. Current research uses computerized mapping conceptualization to operationalize its measurement. Second, the police performance methodological context is used to measure the organizational impact of GIS. Finally, a new theoretical framework, information technology capacity that combines organizational, environmental and managerial factors to explain IT applications, is used to encompass most relevant dimensions of the subject matter. Findings indicate that the use of GIS in police agencies increased sharply between 2003 and 2007. Additionally, the contribution of GIS use on police performance was found to be statistically significant, but in the opposite direction. Overall, results of the present study indicate significant links between crime rate (DV) and independent variables (IV) in law enforcement agencies. IVs are having a professional form of government andfull time specialized crime analysis personnel, police strength, the use of GIS, population, being located in the Northeast and West regions, poverty, having encouraged SARA type projects and a community policing unit.