Visualization is the transformation of symbolic representation to geometric representation. The goal of visualization is to analyze, explore, discover, illustrate, and communicate information in well understandable form. Visualization of crime data provides sufficient input to the authorities on the trends of crimes in the locality. This study clustered the indexed crime data of Misamis Occidental Philippines. Further, the study utilized Self-Organizing Map (SOM) to visualize the data. Results showed that five indexed crime data were clustered together, and three crime data were on the same cluster.