Well, for one thing, the entire West Coast is much less conscious of assigning status based on what school you went to or what religion you are. I remember being shocked to be asked those questions by people I was meeting for the first time. If I answered, I could wheels turning as I was slotted in to their mental rolodex.
Another difference is that people in Northern California (and the West Coast as a whole, again), are smart, but do not spend much of their social time discussing politics or the issues of the day. That tends to be more of a Northeast corridor pastime.
Californians and Northwesterners are much more likely to be outside in their leisure time enjoying the woods, mountains, trails or waters.
Adoption of new ideas (say in health care or other social norms) tend to travel from west to east in the country.