Thanks so much for your post. Realtors are prevented from making judgments about a neighborhood's demographics, safety, family status, etc., so we cannot "rate" any area for safety or give you any impressions of the safety of any neighborhood.
Thankfully, however, there are websites that will collate the information for you so that you can see what reports have been made to the police. You can review http://www.crimereports.com
to see the police activity in the area and also http://www.meganslaw.ca.gov,
which is a state site that complies with the requirements of Megan's Law.
If you have any questions about a specific property or you're thinking of buying, one of the best sources for information will come directly from the homeowners in the area. Knock on the doors of the neighbor's homes and ask them questions directly about the safety of the neighborhood and how they like living in the area. This is one of the best ways to get to 'know' the community--from its members!