Board Thread:Episodic and Issue Discussion/@comment-1635895-20121003002645/@comment-1038387-20121003120752

Yup, Dakota City is indeed the home of all the Milestone heroes. It's based on Detroit. Officially, it has no state assigned, but a map in Icon #18 showed it's located south of Lake Michigan. It's not entirely topographically correct, so it's hard to tell if it's Illinois or Indiana. Either way, that's not really important.