The future historian Robert Heinlein wrote on this years ago.
He predicted a shism that set apart the south and the northeast. I think Texas was included in the south. There was a great swath in the middle and north. Out west, California was split, inland and coastal. The coastal cities of Oregon and Washington were a part of the California coastal amalgam.
As I recall there were 5 divisions but neither Alaska or Hawaii were included.
My thoughts are that he pretty much got it right. Following his lead I have called not for secession, but for purge. I am specially drawn to the concept of purging all of New York and every thing north and east. Northern New Jersey and Wilmington might be added. These states are NeoEuropa, loyalists to the home countries. They have degenerated beyond salvation but can’t see it.
As far as California goes, I expect the big quake to take either LA or San Francisco out of being. With either gone, California might right its self.
I know a lot of good people that live close to both. I was first married in Palo Alto (at Stanford U Newman Center).
Maywood is just east of LA, about 5 miles from Little Tokyo.
So long as you know Heinlein wrote fiction, you will be ok. I rather like his fiction, but the guys who work at Natick on soldier augmentation tend to wish he hadn’t put quite as much detail gee-whiz into “Starship Troopers”.
In Maywood I was a “Stranger in a Strange Land”.
I am still looking for my “Friday”.