A spokesperson for the Texas Department of Public Safety confirmed that Mary Hinojosa was found in an overturned 2000 Pontiac Sunfire at about 7:34 a.m. Monday.
The accident occurred about 1.2 miles east of Mathis.
According to the report, the vehicle veered off the roadway, went into a field, struck a cable box, went across a driveway and rolled over on its top.
The victim was not wearing a seat belt at the time.
Hinojosa was pronounced dead at the scene by Justice of the Peace Amada Cardenas of San Patricio County.