A recent report from PropertyShark, a property research website for investors, lists Illinois' most expensive zip codes—and notes what it calls an “enclave of affluence” in the Chicago area.

ILLINOIS, USA — Nearly 150 more high-risk zip codes have been added to the Illinois Department of Public Health's lead testing list. IDPH keeps track of zip codes throughout the state where residents ...

Illinois residents can now track coronavirus cases in their neighborhood using ZIP code data from the state's department of public health. The interactive map below allows residents to track cases by ...

The Illinois Department of Public Health announced Wednesday an expanded list of high-risk for lead exposure ZIP codes. IDPH is recommending increased mandatory testing for lead exposure of children ...

Locally Researched by: Craig Douglas, Ethan Nelson and Andrew Vaupel, American City Business Journals Oct 16, 2025, 5:00am CDT Editor's Note: The Business Journals evaluated almost 33,200 national ZIP ...

Median home values have increased in 11 of these 12 southwest Illinois zip codes over the last year. Here’s data by zip code. Submitted photo Median home values in a number of southwest Illinois zip ...

SPRINGFIELD, IL — On July 2 the Illinois Department of Public Health expanded the list of high-risk ZIP codes, increasing mandatory testing for lead exposure of children who live within those areas.