For years, the U.S. Census Bureau reported declining population figures for many Chicago area suburbs, but new estimates ...

Cook County added 40,095 residents, also an increase of 0.8%, to almost 5.2 million. Census data shows Illinois population is growing again Who's moving in and out of Chicago? Fed trackers reveal ...

For decades, the most populous region of Illinois has been Chicagoland, whose metropolitan nine-counties area now comprises 68.7% of the state’s population. Cook County alone accounts for 40% of the ...