http://crimeview.ci.richmond.ca.us/crimeviewcommunity/ is a web site of the Richmond Police Dept that will let you map crimes in Richmond. You can select what type of crime(s) or all crime. You can specify the neighborhood by several different means, and you can specify the time period (last 30 days, 90 days, etc). It seems to me an excellent way to answer your question because "safe" is a relative term and I'm not you. You don't want my definition of "safe", you want yours, and I think this will do exactly what you want.
I've lived in Marina Bay for nearly twenty years. The area is a very safe location that seems to be user friendly to single women. There are many in the neighborhood in which I live, Promontory. Gated community, but safe even without the gates.
I would like to commend Mr. Dave Sutton on his well phrased answer to a question which could inadvertently violate the Fair Housing Act by steering a customer to or from a certain neighborhood. In my opinion, you did a very good job providing them with the correct information.
However...Ms. Kamal Randhawa is getting very close to crossing that line.