Here's a general breakdown of certain college degrees and the average income you can expect in the United States:
Anything less than a High School Diploma: $19,000
High School Diploma: $25000
Some college but no degree: $34000
Associates: $40,000
Bachelors: $60,000
We need not mention that while the differences may not seem much between a degree and non-degree, at least at the lower levels, in the long run the differences are huge.
For example someone with a bachelors will on average have better health insurance, 401K plan, live in a better area, have better credit, have better job security than someone with no college degree.
And once the job market gets tough, having a resume with no mention of degrees of any kind will assure your place behind a register or at the grill.
While someone with a degree will be able to relatively quickly find himself a job as good or maybe even better than his previous position.
So in the end, while we are simply looking at the cash income, the actual worth of a degree is far greater than that.