Well at least you’re not CapnSteelers.
Signed,
A 49er fan. 
No she is actually a baker. The saintly kind that brings the world cookies.
There’s a new poster I keep seeing called nevadaexile. I notice the name because it seems very hard to parse.
Nunavut Boy 
And, I suppose if you took a really… expansive… view of things, I would count.
Dangit, I should have used that one!
Alas, it’s for my beloved University of Pittsburgh.
And she’s in the Topeka area.
Pretty sure she’s right here in Portland now.
It is I, The Chilean Blob!
I may count, my name implies to other New Jersians that I am from New Jersey.
Do intentional misspellings count?
Sure!
Which reminds me, we do have a Kansas Beekeeper
Do fictional places count? “Dendarii” is a mountain range on the planet Barrayar in Lois McMaster Bujold’s novels.
Of course!
He’s excluded, because he doesn’t live in LA anymore 
I don’t see the OP specifying user names that indicate the poster’s current location, just those that refer to some geographical location.
Any location is fair game, so long as it is a proper noun.
Sandy Hook, Kentucky. County seat and only town in Elliott county.
Hmm. That’s not how I ever interpreted that name.
Darn. I was hoping you were related to the Captain. Arrr…
No.