There's lots of us here! If you look in my signature, I have a list of Cascadia bloggers and websites--a lot of those people are here on permies. The Pacific Northwest/Cascadia ranges from Northern California though BC, Canada. So not all of us are in the US, but a lot of the growing conditions are the same and there's a lot we learn from each other.
And, like Dave, searching facebook for "homesteaders of seattle" or "Multnomah permaculture" is a good way to get in touch with really
local people.
If there's
enough interest here on permies, we could make local private forums, too!