Most of USC's recruits are from Southland high schools, but Trojans coaches are also mining local junior colleges for the class of 2015.
Last Saturday, coaches attended games at Long Beach City College and Riverside Community College.
Long Beach receiver De'Quan Hampton is committed to USC.
USC has offered Riverside receiver Isaac Whitney. Coaches continue to evaluate Riverside tight ends Junior Pomee and Matt Morin.
Pomee played for the Trojans as a redshirt freshman in 2012. He was arrested in January 2013 in connection with alleged incidents near campus, but a judge dismissed the case the following August.
Pomee told USCFootball.com earlier this month that he is interested in returning to the team.
Hemsley signs financial-aid agreement
Los Angeles Windward School's Roy Hemsley signed a financial-aid agreement with USC last week.
Hemsley, an offensive lineman, is on track to enroll in January.
"I think Roy's upside is unbelievable as a tackle in our system," USC Coach Steve Sarkisian told the Los Angeles Times.
Hemsley is the fourth recruit in the 2015 class to sign a financial-aid agreement, joining quarterback Ricky Town, linebacker Cameron Smith and offensive lineman Chuma Edoga.
The agreement is binding for the university but not for the player.
"It's a new rule that everybody is trying to get comfortable with and we are trying to take advantage of," Sarkisian said.
USC hangs on to offensive lineman
Edoga, from Powder Springs, Ga., signed a financial-aid agreement in August but took an official visit to Georgia last weekend.
Edoga told Scout.com's Chad Simmons that he remained committed to USC.
"I'm not going to Georgia," Edoga told Simmons. "Fight on!"
Edoga said, "Georgia had a chance for a minute," but that Athens, Ga. was "not for me."