I haven't seen anyone even suggest less than $100k for a newly minted doctorate in CS from a good university, and I've seen numbers in the $120k - $140k range thrown around. It sounds like East Coast hedge funds are even more generous.
I don't know about starting salaries, but DC-area hiring is plentiful, and you should be able to hit $100k in a few years (if not sooner). Of course if you want to be under the bright lights, and not spend your career backstage, then: Go west, young man.
(Computational physics, not CS, but still...)