Here's what I have for San Francisco: http://www.warplife.com/jobs/computer/united-states/californ...
To determine whether a corporation is still in business, check the California Secretary of State's website. However they may be a foreign corporation - that is, incorporated elsewhere - but doing business in California.
Saw a report like that for the UK
"Tech Nation was compiled using data from DueDil, Adzuna, Crunchbase, AngelList and F6s, and analysed 47,200 digital technology companies across the UK" http://www.telegraph.co.uk/finance/yourbusiness/11390230/Bou...
Anyway, Crunchbase and Angelist might be potential sources.