This study uses routine activity theory and research on victimization and fear of crime to contextualize the importance of examining characteristics related to crime-target vulnerability among public transit commuters. A principal component analysis was conducted using 5-year data from the American Community Survey 2010. New York City (NYC) Police Department Compstat data for 2010 were used to provide a backcloth for understanding the types of crime problems vulnerable transit commuters may confront in their local areas. Findings show that a majority (55.3 per cent) of the NYC commuters used public transit to travel to work, with more females, youths, ethnic minorities and non-naturalized immigrants commuting by public transit. Two distinct types of transit commuters were found to cluster in different parts of NYC, where the types of local-area crime problems also differed. These findings can help transit operators and policymakers build guardianship and assist place management in areas where potentially vulnerable commuters live.