Seems clear to me; the state names are in all caps. So Chicago is a state, for instance, and so is New York. Also illustrating this, you can see that the city o

Seems clear to me; the state names are in all caps. So Chicago is a state, for instance, and so is New York. Also illustrating this, you can see that the city of Detroit is labeled, but the state of Detroit is also labeled in all caps, since there is room to do so in that case. Edit: You can also see that the state capitals are underlined.