There are parts of every urban area that are bad as Detroit and other areas that are fairly safe.

In any case, most of the urban areas actively manage their crime statistics by various means so that they are not as meaningful as one would hope for.

Reading anything into them as a survival tactic is not going to be as helpful as one might hope. Raw numbers like this just do not tell you anything useful.

You cannot really depend on being safe in areas considered safe either. An acquaintance of mine was murdered about 10 years ago in a well to do area that had virtually no crime, and there has been very little crime since in that area.

There are some Google maps that have been put together by various entities that show where crimes have occurred. The maps show clusters of crimes that make for good information on what areas of town to avoid.