It happened at Route 91 and Salem School Rd. near Dunlap Valley Middle School around 2:30 p.m.
Only one SUV was involved.
Police are not sure what caused the accident, but say poor weather could be a factor.
The four people got out of the SUV okay.
Their identities were not available Sunday afternoon, but a scanner call indicated one of them is an 11 or 12-year-old girl.
Their injuries are not believed to be life-threatening.