State Street is a major thoroughfare in the city of Chicago. It represents 0 East/West in the city, as it is believed to be the original location of how far inland Lake Michigan went in downtown Chicago before the Great Chicago Fire happened. Unlike other North-South thoroughfares, State Street is named a street instead of an avenue to help people remember that it is 0 East/West in Chicago.
For a certain distance, the Chicago Transit Authority's (CTA) Red Line runs under State Street.
0 North/South in Chicago is Madison Street, which has included such buildings as the former Chicago Stadium and currently the United Center, both nicknamed the "Madhouse on Madison".