This technical document describes the geocoding and cleaning procedures used when geocoding crime data in Southern California cities for the project, Crime in Metropolitan America: Patterns and Trends across the Southern California Landscape, a project funded by the National Institute of Justice (NIJ). A key component of this project entailed the collection of incident crime data for cities located in the greater Southern California region. Cooperating police agencies reported incident crime data with geographic information for as many years of the study period as possible (2000-2013). Crime events were geocoded through a procedure using a geographic information system (ArcGIS 10), as well as two other procedures to attempt to geocode cases not geocoded by ArcGIS.