Via KoreaBang comes the below statistics that shows the current crime rate in Seoul:
A year-end review of crime rates in Seoul found that you are most likely to be attacked by teenagers in Nowon, raped in Gwanak, and murdered in Kangseo. In each district, officials blamed the number of hagwon students, single women living alone, and foreigners for the unusually high incidents of the particular crime.
Netizens didn’t blame any one group in particular, but cautioned that it is dangerous for a woman to be alone in Seoul. Out of all the districts in Seoul, Gwanak reported the highest number of rape cases, 293, out of a population of 521,000, While Gangnam had the highest number of drug offenses, 129, out of a population of 528,000. [KoreaBang]
You can read much more about the Seoul crime statistics at the link to include netizens comments.