The incident occurred at 501 Cooper Road around 11:30 p.m. Sunday. The victim told officers she was attacked just before the place closed. The suspect fled the scene.
Police said surveillance cameras captured the assault.
A 14-year-old suspect was arrested at about 11:50 a.m. and booked at Ventura County Juvenile Hall. His name was not released due to his age.
Anyone with information about the crime was asked to call Oxnard police at (805) 385-7740.