How many cities (and which ones) has godzilla destroyed?

According to Wikipedia

none.

Since Godzilla is fictional and so are all the locations that he appears in on film, I have to go with @NaturalMineralWater on this one and say that he has destroyed no cities.

He’s outside my house at the minute. I’ll let you know if he destroys the city.
Oh sorry my bad, it’s the mother in law

I saw her on 23rd Street that one time. Who was that other guy she was with? Matthew Broderick? Meh. She destroyed nothing. Everyone was just pissed off that the bloody klieg lights stayed on almost all the damn night!