Here's an interesting infographic from Intuit showing the world's top 20 startup centers. The West coast of North America has four: 1 - Silicon Valley; 3 - Los Angeles; 4 - Seattle; and 9 - Vancouver. Interesting why there is no listing for Portland given the large high tech community there.
I've written about the connection between centers of innovation and the disruptive reality of living on a major earthquake fault-line — is there a connection?
The West Coast Corridor: 1400 Miles Of Innovation - Disruptive Creation On The Fault Line
Here's the infographic: (Hat tip Heidi Groshelle.)