I don't know about "junior developers", but the average starting salary for a fresh BS from my public university (based on a voluntary exit survey, so there may be some upward bias) is around $80.5k.

This is particularly pertinent because the vast majority of the students here end up working in the Bay Area.

I'm also Australian! I'm led to believe Junior developers are at around $90,000. It's hard to say with the level of experience these people have, as it's very much entry level.