Police spokesman Lalo Villegas told the Monterey County Herald that the woman was stabbed in the abdomen early Sunday about an hour after she left a nightclub with a man between the ages of 30 and 40.
Villegas says the victim underwent surgery at a local hospital and is expected to survive.
Police are working to confirm her identity and to locate the suspect.
Villegas told the Herald that investigators do not yet have a motive for the attack, but would charge it as a hate crime if they learn it was due to the woman's gender identity.
Information from: The Monterey County Herald, http://www.montereyherald.com