The "Median Salary" figures are surprising to me for a number of reasons. To isolate Denver specifically (where i live, work and hire routinely) i do not know a single developer who is making < 70/yr.
Perhaps this figure is brought down from the sheer quantity of code school (Galvanize, Turing, General Assembly) grads we have in the city, but even then i find it hard to believe 50% of the se's in Denver are making south of $67/yr.
Edit: I'm dumb. The median salaries are adjusted for cost of living of the city.