As of last month, it's the Chicago-Naperville-Joliet metropolitan area.
To reflect recent population trends, especially the growing size of the the nation's suburbs, the agencies altered the names of some of the country's 370 metropolitan statistical areas last month.
The names of the metropolitan areas change periodically. In 1990, the official name for the Chicago area was Chicago-Gary-Lake County.
By 1999, though, it was the Chicago-Gary-Kenosha metropolitan area, reflecting the population growth of some areas of southern Wisconsin.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.