Anywhere in the bay area. (Except maybe Oakland, though you probably not live very long if you live there, so I guess you could get away with less retirement savings.)
Unless you want to try to make arguments about places like Atherton, in which case you can't really point to a community of 5,000 people with residents including multiple NBA and NFL players, Eric Schmidt, Ben Horowitz, Robby Krieger of The Doors, Charles Schwab (the one and the same), Lindsay Buckingham of Fleetwood Mac... any more than you can point to Medina in Washington and try to extrapolate that to Seattle.