The flipped car was reported at 8:03 a.m. at Alemany Boulevard and San Juan Avenue, the fire official said.
The woman was trapped in the driver's seat of the vehicle and had to be pulled out by emergency crews, according to the official.
She was the sole occupant of the car and no other vehicles were involved in the crash, the fire official said.
The woman was taken to the hospital but information about her injuries was not immediately available.
