The crash occurred at about 5 a.m. Monday on Silver Run Road in Millville, Cumberland County.
An 18-year-old woman from Pemberton in Burlington County was driving southbound near Dividing Creek Road when her Jeep Liberty left the road, according to Millville police.
The Jeep rolled over and struck a utility pole.
The baby was taken to Inspira Medical Center Vineland, where he was pronounced dead, police said.
The woman was not seriously injured.
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