Illinois
Illinois was a state located within the interior of the North American continent of Earth. This was a state in the United States of America. The bordering states were Indiana, Iowa, Kentucky, Missouri, and Wisconsin. This state was in the  region. The cities of Chicago and Springfield were located in this state. The two-letter code for this state was IL. (; ; )

In an alternate timeline in which Nazi Germany had invaded the United States, as of 1944 Illinois was controlled by American forces. ()

In September of 2151, temporal agent  claimed he and a fictional brother of his grew up in Illinois as part of his cover story. In reality, Daniels came from a place called "Illinois," which he said was very different than the Illinois of 2151. ()

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Earth subnational entities