What state is most similar to Ontario?

[Storr]

Northern Ontario is similar to Northern Michigan (in other words, lots and lots of trees). Though, Toronto is nothing like Detroit. Nor was the province ever singularly focused on one principal industry as highly as Michigan was tied to the automobile. Ontario being divided between the Toronto region and everything else is similar to New York being divided between the New York City region and everything else. Plus, both contain their country's largest cities.  I agree with Chicago being quite similar to Toronto. Both have similar histories and economies. Neither would exist without the respective great lake they border. Illinois would be easily the US state most similar to Ontario if Wisconsin were a part of it. The same might also be true if Northern Ontario was its own province.