Preliminary results had identified the body as that of an adult Hispanic female after it was found in the 800 block of Ticonderoga Drive in a loosely cinched large garbage bag, Capt. David Verbrugge said.
An autopsy conducted Monday identified Orozco using her fingerprints, Verbrugge said.
The Santa Clara County medical examiner's office determined the cause of death was trauma to the head, according to Verbrugge.
The Santa Clara County Crime Lab and the medical examiner's office began identifying the body after someone reported the bag at 10 a.m. on Sunday morning, Verbrugge said.
Anyone with details about the case is asked to call the Sunnyvale Department of Public Safety at (408) 730-7110. Those who wish to remain anonymous can provide information by sending an email to SVTIP@tipnow.org.