Find companies you want to work for, then look on glassdoor for salaries.<p>Location + tech stack determine your salary and there is no single answer. If you find comparative salaries to your skill set you can pretty much ask for that, refuse to go lower and get the salary you want.
Look at your market, maybe off of angel-list, go off of that.<p>In the Midwest (at least Houston), about 50k starting is reasonable until you prove your value, including insurance.<p>Naturally, you should seek to increase this number soonest.