(Disclaimer, I'm not in SoCal, but in Boston). I don't really want to be too specific since it would involve revealing my own salary for the job I just accepted, BUT let me just say this:
I interviewed last year for entry level positions at regional public accounting firms having my bachelor's degree, and my 150 credit hours (not related to accounting unfortunately, but still counting towards CPA licensure). Decided to put off work for a year and take the CPA exams. NOW, having 3/4 exams passed, my salary offers at similar firms (and some of the same EXACT firms from last year) have increased by $10-$15k. I was NOT expecting this. I knew having, or being close to having a CPA would obviously be worth SOMETHING in salary, but I was thinking maybe more around $5k or so. I. WAS. FLOORED. I ended up accepting a position that offered me $12k more than what they offered me last year.
Moral of the story: GET YOUR CPA.
Also, Glassdoor.com is really good for typing in a job title (“staff accountant”) and getting the average salaries sorted by area.