UIUC is 25k a year just tuition and fees. Expensive college town room & board plus opportunity cost of education instead of working easily gets you to 30k a year.
The legislature passed a budget every year under Rauner, he refused to sign it because he wanted anti-union runners. Agreed it's been a long time coming though, definitely not just Rauner's fault.
Certainly not an option for everyone, but a ton of people in my state school class still lived at home. A good percentage could have lived at home but chose not to.
It's also hard for me to include housing because you'd need housing no matter what path in life you choose.
Berkeley was my guess for an expensive in-state tuition rate and they're $38k for 2 years.
Unless you're including housing/food/etc.