That's *significantly* less than I made as a no-benefits intern (if you had extended said internship to a full year) with 3/4 of a Bachelor's degree six years ago. It's about 2/3 of the entry-level salary for a developer around here even if you aren't working at the good places, about half if you are, and that doesn't include benefits.
Are you sure that union is helping out? I mean, I assume your cost of living is a lot lower than mine - I'm in Seattle - but that is a seriously mediocre amount of money for this field. Are you saying that would make up the difference between what you make now and what you would be making working some other field?
Note that I'm not opposed to unions in theory. I just tend to think their implementation tends to have problems and sometimes is a significant net negative. There are fields where unions make a lot of sense - construction comes to mind, for example, and mining, and other dangerous jobs where one worker is largely interchangeable with another and consequently the workers have no power - but IT in general (be it support, development, consulting, or so on) are not such a field. I work 40 hours a week, have four weeks paid vacation a year plus paid sick days and holidays, can work from home when needed, make six figures plus bonuses, have a generous training budget, and get benefits. I'm 4.5 years out of college with an Engineering bachelor's, and took a six-month break in the middle of that. What would a union have gotten me that could possibly be worth its dues? That's ignoring the risk of the union making it hard to get rid of the people who sincerely need to go, and other such potential problems.