What is the average IQ in the silicon valley?
1) I'm not picky on what geographical area is considered Silicon
Valley: SF to San Jose or Bay Area will do
2) I'd rather have a number encompasing as much of 100% of the
population as possible (instead of just engineers or people with tech
jobs), but I'll settle for the second value if you only find that

I don't know about the level of IQ, but I can tell
you the level of arrogance in the Valley is sky high.

It would be average. Why? who keeps the cities running?  Average
folks...  There is nothing special about silicon valley, other than
people who like to works with computer get jobs there.  But that is a
very small number compared with the number of people that live there.