Wow, I live in the region. I've been to Oil City a number of times - or more accurately, through it, since nobody would want to stop in Oil City.
Info: Oil City and the surrounding area is extremely economically, and socially, depressed. They drove out the energy business a decade ago by trying to drive hard terms and got told to fuck off. They tanked and the whole area is destitute.
Can't say I'm surprised at this. I know someone who works in the public school system for the region; they say that people who live in Oil City and surrounding area try to sneak their kids into nearby school systems, and it results in a steady stream of mentally disturbed children who have signs of fetal alcohol syndrome roaming the halls and freaking out.