I sympathize with your desire to find out as much as possible but realtors can not post a good answer to your question.
Different people will have very different values for what is safe. Go visit a nearby grocery store, buy food for a picnic and visit one of the parks. Talk with the people you meet. You will learn more than just about the safety. It can be worth your time.
Unfortunately some local developers and real estate professionals have helped create problems in the past by saying that a neighborhood is turning bad. Perhaps the largest local example of this is East Palo Alto. If you have talked with long time residents they will tell you how East Palo Alto was a typical bay area city. Roughly in the late 40s lower income people became attracted to the area. A certain amount of panic was created by various real estate professionals / developers saying the area was going to turn into a crime ridden slum. This was told to me by a now 90 year old man who had lived in the area, became successful and moved to Los Altos Hills. This and similar events have lead to laws prohibiting real estate agents from any activities which could cause damage to a neighborhood.
Home values in zip code 95132 http://julianalee.com/zip-code/95132-statistics.htm
Just sold in zip code 95132 http://julianalee.com/zip-code/95132-home-sales.htm
I used East Palo Alto as an example because of what was told to me. One of the best people I've had work for me lived in East Palo Alto. She had a college degree from a top university and was able to find work with pay and opportunities I could not match.
Top 2 agent nationwide at Keller Williams Realty, the nations largest
Over 20 years experience
Over 1,000 homes sold in Santa Clara County and San Mateo County