State Street is a major north-south thoroughfare in Chicago, Illinois, USA. It begins on the Near North Side at North Avenue. For much of its course, it lies between Wabash Avenue on the east and Dearborn Street/Lafayette Avenue on the west. It runs through the heart of Downtown Chicago and ends at the southern city limits, intersecting 127th Street along the bank of the Little Calumet River. Its intersection with Madison Street marks the base point for Chicago's address system.