Green’s Dictionary of Slang

Bay City n.

[the San Francisco Bay on which the city stands; however, the fictitious (and massively corrupt) Bay City created by Raymond Chandler (1888–1959), is generally seen to be Oakland, California]

(US) the city of San Francisco, California.

Show quotations
[US]W. Winchell On Broadway 7 Dec. [synd. col.] San Francisco has outstripped Los Angeles in furnishing native sons and daughters to the screen. Among the prominent players born in the Bay City are [etc.].
[US]Lait & Mortimer USA Confidential 141: San Francisco—Bridgeport on the Golden Gate. Duty too often betrays sentiment. We love the Bay City.