In Northern California...
The Fab Four will be performing at the CA State Fair (in Sacramento) on tuesday, August 15th. The show is free with your paid fair admission, but you can "upgrade" to better/reserved seating for a small fee.
Check out their web site at www.bigfun.org
We've enjoyed the state fair for the last 18 or so years.
It's a BLAST!
(now if they can just get Sandbox Band to play there...)