Generally, real estate agents are going to defer to websites and the local police when asked this question. The reasons are:
1. Agents are leery of answering anything that could even remotely be construed as "steering", which is illegal.
2. "Safe" is a relative term. What's safe to me, might not be considered safe to you.
3. Agents don't want to feel/be held responsible should they attest to a location being safe, you buying there, then getting your car/home broken into the next day.
Additionally - as a buyer - I wouldn't want to trust the opinion of a real estate agent who is trying to ultimately sell me a house. It's always best to get this information from an impartial source. Knock on a few doors, check with the local police, and consult the different websites that offer this information freely.