Gotham city creates stories.
Batman's earliest activity place was new york City, and later it was changed to the fictional Gotham City. When asked why, Bilfinger BillFinger of the creators, replied that at first, I wanted to name it CivicCity, and then I tried CapitalCity, the capital city, and then CoastCity.
Then I searched new york's phone book and found the name Gotham jeweler, Gotham jeweler. I thought this was it. We do this because we want anyone in any city to agree with it, just like many other cities in the DC universe, because of editing clips and changes and adjustments in story lines.
The geographic information of Gotham has been changing in the first few decades, but the main location used is mostly in New Jersey. AmazingWorldofDCComics,No. 14 andNo. 1974, The Magical World, was marked in New Jersey when publisher MarkGruenwald discussed the history of the Justice League.