i feel your pain, i had a car break-in at my old apartment. every apartment i had been in before required proof of renter's insurance before you moved in, this place did not so i figured i'll get it later. well two weeks after i moved in i walked out at 7:40am to go to work to find two guys ripping my car apart. renter's insurance would have covered it. i lost nearly $5k in stereo equipment and the damage to my car, idiot pried the door handle off instead of just breaking the glass. on the plus side, i came out in time to prevent them from taking my wheels, they had the car on a jack already, another 20 minutes and my car would have been resting on frame.
and unfortunately it doesn't matter what area you're in, i was in a pretty nice area, only a few blocks from a VERY nice affluent area, but only a few miles from a crappy area. that's how southern california is though, you're rarely far from a bad area, and the people in the bad area go to the nice area, to get the nice stuff. i got a call from the costa mesa police department nine months after my car was broken into, they found the guy, my stuff was long gone but at least i know he was punished for what he did.
it really does make my blood boil to think that people somehow think it's okay to take things that don't belong to them. i wish you the best of luck in getting your stuff back, or at the very least the criminals paying for their crime.