The crash happened at 9:00 a.m. on Marsh Road at Chestnut Street.
Police and medics arrived to find three people trapped in a Honda Civic and one person in an overturned Toyota 4Runner.
It took about 45 minutes to free everyone from the vehicles. One person had to be flown to the hospital.
State police are investigating the circumstances of this crash.
The names of those involved have not been released.