Thread:TheD3xus/@comment-3361105-20140617203449/@comment-1038387-20140617210126

From a quick check of several wikis: it was first suggested as being in NJ in an issue of Amazing World of DC Comics - a fanzine, but with "canon" creators. And apparently, has Gotham City, NJ on a driver's license. For what it's worth. I haven't found any specific mention of another state. Fans have placed in the Great Bay just north of Atlantic City, though I'm not sure that's canon.