North Avenue (Chicago)
Starting at St. Charles's eastern border with West Chicago, its name changes from Main Street to North Avenue, just east of the Kane/DuPage county line.North Avenue, signed as Illinois Route 64, travels east from Main Street at the St. Charles/West Chicago border.Together, the two highways cross the county line and then continue into Northlake (named after North Avenue and Lake Street).The route continues as a border between Oak Park (south) and Chicago (north) until reaching Austin Boulevard.On the northern side all of the Street in the City west of Kedzie was annexed with the Town of Jefferson effective June 29, 1889.