Aerial view of Chicago Downtown with suburbs; these suburbs are where the top 5 most expensive ZIP codes can be found. So, read on to find out the most expensive ZIP codes in Illinois in 2025, relying ...
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 ...
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