Hi Cindy
I live in Kitchener which is next to Cambridge. I don't know too much about the areas to stay away from but ususally they are the downtown areas.
Cambridge is 3 towns put together, Galt, Hespler & Preston. I usually just get to Cambridge town centre which is on HWY24 Hespler st.
I do know listening to the news that there are some bad areas I'm just not fimiliar where they are exactally.
Sorry I couldn't be more help. I wonder if you were to call the police dept. if they would have some imformation for you
Anica