There are 36 million people in California...and every last one of them reads The Boneyard. I wonder how many of them thought of South Carolina when you wrote "USC."
It may be confusing to some, but I think it depends on your location, and your mindset. The following is
very important in understanding this truism. Here in the "Golden State", when ever the University of Southern California is mentioned or referred to by the media, be it in print or verbally (radio/TV), the acronym "U.S.C." is usually used.
EVERYONE here KNOWS they are referencing the SC Trojans. South Carolina does not register a blip on the radar screen in California. Sports fans here are not concerned about the Gamecocks unless they're the next game on the schedule. We seldom if ever get any news reports or features about the Gamecocks. If they are not the #1-2 team in the country, and destroying everyone they play, they don't get any airtime (mention) here.
There are too many major universities in California, and on the west coast to care about, or be interested in USCe. There are lots of local fans and alumni of those colleges residing in the region. The PAC 12 is alive and well out here. While there is luke warm interest (curiosity) in the top 2-3 schools ranked nationally, the interest and focus of most college sports fans out west are the schools that comprise the PAC 12.
They're trying to cheer and "will" their school to a conference championship and hopefully and bowl game. To S.C. Trojans fans and alumni (my brother is one), USC is
the University of Southern California!!!!
Fight on!!!
To folks on the EAST COAST, the opposite is true. As I said, what "USC" means to you depends on your location. To fans in and around South Carolina, USC does not reference a school 3,000 miles away on the wrong coast.
What about
O.S.U. ?...................................
Oregon State University?
Ohio State University, or
Oklahoma State University???
To folks in the Oregon/Washington State area, it means the OS Beavers. In Ohio, those same letters refer to their favorite home town team, the Buckeyes, etc.