The aspiring actor, who lives in Los Angeles, will receive a 1-year, $25,000 talent deal with ABC.
He beat out 7,000 other applicants.
Two of the other finalists were from the Bay Area, including Brandon Modelo of Antioch and Benita Nall of Palo Alto.
The ABC Discovers Digital Talent Competition helped launched the career of Academy Award winning actress Lupita Nyong'o.
Click here to watch the moment Sam learned he'd won the competition.