State College Police continue their investigation to find who is breaking into these vehicles.
They say Wednesday alone, there were seven new break-ins reported, bringing the total to 22 since last Saturday.
Neighbors say this many incidents seem unusual.
The streets of Greentree neighborhood are quiet Wednesday afternoon, but residents say a string of recent car break-ins is causing alarm.
"It's a little alarming that this is happening so close to home," Susan Rogacs said.
Rogacs has lived in Greentree for many years. She says she's heard of car break-ins before, but this is unusual.
"Occasionally, over the last 20 years, very seldom, once in a while, there will be an occurrence," she said. "But we haven't had a rash. Nothing like this."
Since last Saturday, State College Police say over 22 cars were broken into, with several items stolen, in various neighborhoods across the borough.
They say Harris Acres, Dalevue, Greentree and Centre Estates are the areas targeted so far.
"These are crimes of opportunity," Kelly Aston with State College Police said. "People see something that's easy. They're not forcing entry into the vehicles, they're preying on vehicles that are unlocked."
Kelly Aston says the best thing to do is lock your doors, and be sure to remove anything valuable from your car.
Even still, Rogacs hopes whoever is behind the break-ins is caught soon, and warns her neighbors to stay cautious.
"It is a safe neighborhood," she said. "It definitely is, so people probably get a little casual about that, but there's strangers around and there are things you have to be vigilant about and I would suggest everyone keep their doors locked."
Police say at this point, they don't have any suspects and don't have evidence that may connect these crimes.
Anyone who sees a suspicious vehicle parked in the neighborhood should give police a call.
Police say even if it seems like nothing, those calls could help them find the suspects.