As of September 2023, the average value of a single-family home in the Chicago area was just over $370,000 — about $20,000 above the U.S. average. But in parts of the area, home prices soar far higher. In fact, in the region’s 10 most expensive ZIP codes, the average home value is double (or even triple) that of the national average. Here are the top 10 most expensive postal codes in the ...