With the discussion of 2 districts in California, and how the split would play out, I thought it'd be interesting to map out where the teams at each regional were from. Mapping only teams from California, I found that Los Angeles was the least spread out:
And CVR was the most:
Here are the other regionals if you're interested:
Davis:
http://imgur.com/YRICGFu
Orange County:
http://imgur.com/XfZfSGL
San Diego:
http://imgur.com/6d508PU
San Jose:
http://imgur.com/gNlYtrU
Ventura:
http://imgur.com/IwDWM4F
(red markers = the event location, dots = teams, larger dots = more teams at the same location)
I'm not sure if there's anything that can really be gathered from this data, but I thought it was interesting to look at anyway. There's a clearer norcal/socal split than I expected, especially with socal events.