I make $65K salary (in Boston). Double major in Classical Studies and English in '06. Late bloomer in finding coding. Working professionally as web dev for just about 2 years. I'm considering going to school to get a masters in Computer Engineering.
I like to say if you can read Greek you can certainly read Perl/C++.
If you're good I don't think you need the masters, unless you want to specialize in something mathy/difficult, e.g. machine learning. But if you can pick up just an algorithms and data structures course it will make you a better programmer.
Best of luck to you!